|Nexus 7 battery drain after 4.2 udpate||Muhammad Mulla||11/18/12 5:23 AM|
I have found that after the Nexus 7 OTA update to Android 4.2, my battery is draining a lot more quickly. There is also a square shape appearing on the side of the unlock screen.
The battery drain issue is the most concerning, however. Previously the screen would be the highest power consumer, as it should be. Now, since the 4.2 update, battery drain is showing as 51% for Android OS, Google services as 13% and the screen as 9%. I am finding time between charges to be much shorter with similar usage.
The device is an non-rooted Google Nexus 7 8GB, Android version 4.2 build JOP40C, Kernel 3.1.10-g22b4fcd
|Re: Nexus 7 battery drain after 4.2 udpate||Paul Apted||11/18/12 9:22 AM|
I am having exactly the same issue , in fact mine is draining even when "sleeping" . If i leave the Nexus in sleep mode at night , in the morning it has gone through 40% of the battery ...On other forums a reset is suggested , seems every time there is an update , a factory reset is needed to get the thing working properly...
|Re: Nexus 7 battery drain after 4.2 udpate||p.g.gonzalez||11/18/12 7:14 PM|
Same problem here. Google services are using quite a bit more resources. NFC seemed to be a big drain too before I disabled it.
|Re: Nexus 7 battery drain after 4.2 udpate||Duc M. Tran||11/19/12 1:39 AM|
I have the same problem. I tried to disable the Nfc service, but it kept appearing on the Battery menu.
|Re: Nexus 7 battery drain after 4.2 udpate||Muhammad Mulla||11/19/12 2:05 AM|
I got around to resetting my device last night and it seems to have improved things.
However, I agree, it's not ideal to have to backup and restore all data and settings every time there is an update for the OS.
|Re: Nexus 7 battery drain after 4.2 udpate||warren rosher||11/19/12 9:38 AM|
Had the same problem reset mine and it worked fine but a day later same fault is back os running at 54% kernel at 14 %
|Re: Nexus 7 battery drain after 4.2 udpate||Jon Bautista||11/19/12 11:12 AM|
I just experienced this problem as well. Normally, before the update, I could leave my device in sleep mode and the battery would be fine. After the update, I left it at around 80% last night only to find it at 14% this morning. Checked battery usage and sure enough the OS used a majority of it during sleep mode. Hopefully Google pushes out a new update to fix this issue and some others, like the lag.
|Re: Nexus 7 battery drain after 4.2 udpate||Paul Apted||11/19/12 11:46 AM|
I have done a Reset , last night it only used 4% of the battery while sleeping
|Re: Nexus 7 battery drain after 4.2 udpate||Steven Meyer-Rassow||11/19/12 12:18 PM|
Same here. With the update to 4.2 I'm now getting almost 25% of battery time. Even without using the device (bar maybe checking my emails let's say 6 times during the day), my N7 will not make it through the day without draining the battery. On 4.1.2 I was getting an average of 1day and 10hours to each charge. I'm also encountering real lag when using apps, swiping between homescreens and general web browsing. And I too have had a number of random re-boots. But by far, it;s this battery drain that is concerning me. How come the screen is no longer my my drain on power? It's now the Android OS, followed by Google services. Android OS makes up for 42% of battery power and Google services for 9%. Very very poor.
|Re: Nexus 7 battery drain after 4.2 udpate||Jon Bautista||11/19/12 1:34 PM|
I was able to fix the lag issue yesterday by clearing the cache as described in Method 2 of this link:
It made my Nexus 7 less laggy, but then I noticed the battery issue this morning. Did a reset as someone mentioned, but have yet to see if that fixes the battery issue. Luckily, I read in this article that Google is aware of the issue and is working on a fix.
|Re: Nexus 7 battery drain after 4.2 udpate||Scot P.||11/19/12 1:52 PM|
Same Issue - 2 day battery life prior to 4.2 update
after update - 4 hour battery life and phone/battery is very warm to the touch
Resetting phone has no noticable effect.
|Re: Nexus 7 battery drain after 4.2 udpate||warren rosher||11/19/12 11:30 PM|
Goog to know Jon I don't fancy having to to another full system restore
|Re: Nexus 7 battery drain after 4.2 udpate||cormaster||11/20/12 6:44 AM|
Mine was fully wiped and still pretty high drain. Before during sleep, we're talking maybe a percent drain every 6 hours, now it's a percent drain every hour, and while awake and in use the battery drains pretty quickly, like a percent every 3 to 5 minutes
|Re: Nexus 7 battery drain after 4.2 udpate||Rugby Ali||11/20/12 7:21 AM|
Prior to the 4.2 upgrade I was getting approx 5% drain in 25mins of browsing/playing games on The Nexus 7, now playing Coin Dozer for exactly 10 mins drains the battery 4%. Even sitting idle (with WiFi enabled, GPS disabled) it drains at an rapid rate. Also 'Media Server' shows up in the battery settings as the highest usage, whereas prior to the upgrade it was always 'Screen'. There is definitely a problem.
|Re: Nexus 7 battery drain after 4.2 udpate||warren rosher||11/21/12 12:43 AM|
Anybody here using Avg anti virus I was deleted that problem has gone for now
|Re: Nexus 7 battery drain after 4.2 udpate||Vivien Bui||11/22/12 9:17 AM|
i am on the same boat as all...the battery had drained all out this morning even with the power cord plugged in, phone wouldn't start at all. such a nightmare can't even use my phone, no extra battery.
|Re: Nexus 7 battery drain after 4.2 udpate||dullknives||11/23/12 10:00 AM|
same battery drain issue here on my galaxy nexus, google services is killing me. also showing network location wakelocks which never used to be an issue. no changes to location services settings since the update to 4.2.
|Re: Nexus 7 battery drain after 4.2 udpate||Lokii||11/26/12 12:52 AM|
Same issue here.. Google Services draining about 38% of the battery life..
|Re: Nexus 7 battery drain after 4.2 udpate||Cori27||11/26/12 1:14 PM|
I want to go back to 4.1.2 - booooooo hooooooo :(
battery drain - check
auto brightness fluctuating light to dark - check
random square on the home page before unlocking - check
A VERY LARGE, THICK NUMBER for the hour on the clock - check
draw something freaking out - check
Not happy with 4.2 - check
Trying to be patient and wait for fixes.... (BIG SIGH) check
|Nexus 7 battery drain after 4.2 udpate||yumifaeldo||11/27/12 12:47 AM|
Same issue here after my GNex got the 4.2 update. I can't depend on it anymore whenever I go out, it just drains like crazy because of google services
|Re: Nexus 7 battery drain after 4.2 udpate||Dave K.P.||11/27/12 1:41 AM|
Yep, same here. Went to bed last night @ 70%, and ate through it all in 4-5 hours of standby. Culprit was listed as Google Services, taking 29% of the battery, followed by screen at 25%. Android OS was also ranked much much higher than usual.
Hope that Google sees how common this issue is, and gets it fixed soon.
|Re: Nexus 7 battery drain after 4.2 udpate||Cori27||11/27/12 12:12 PM|
Oh... I just received a system update... I wonder if these are fixes? I hope so. Anyone else just get an update? 12:12 pm pacific on 11/27. :)
|Re: Nexus 7 battery drain after 4.2 udpate||Cori27||11/27/12 12:16 PM|
Yes, it now says 4.2.1
They did not fix the one LARGE number on the clock or the square on the unlock page, but hopefully the rest is fixed. Fingers crossed!
|Re: Nexus 7 battery drain after 4.2 udpate||Jon Bautista||11/27/12 1:11 PM|
I didn't receive the update. It's probably not for the Nexus 7. What device do you have? Also, I think the battery drain issue has stopped since I did the reset as I mentioned before and clearing the system cache seemed to fix lag a bit. In addition, you can try disabling the sync option in Google Currents to help with lag. At least for those that didn't get the update, assuming it fixes anything at least. Hopefully...
|Re: Nexus 7 battery drain after 4.2 udpate||Cori27||11/27/12 1:17 PM|
I too am running the Nexus 7, received the update a little while ago. My Android version now says 4.2.1 :) Thanks for the other tips about the battery life!
|Re: Nexus 7 battery drain after 4.2 udpate||Jon Bautista||11/27/12 2:46 PM|
I wonder if they're rolling the update out based on location, because I haven't received it yet. Still running 4.2. Notice any improvements? Hopefully this update fixes some of the problems that 4.2 brought up. Yup, no problem!
|Re: Nexus 7 battery drain after 4.2 udpate||Jon Bautista||11/27/12 10:42 PM|
Ok. For those that aren't getting the 4.2.1 update, clear the data for Google Services Framework (Settings>Apps>All>Google Services Framework) and manually check for the update. Update appeared on the first try for me. I just updated and can confirm, at least for my device, that it works great! Zero lag and it's buttery smooth like it was before the 4.2 update!!
|Re: Nexus 7 battery drain after 4.2 udpate||Brandon Fitzgerald||11/28/12 6:23 AM|
Any updates on battery life with 4.2.1? Change log and diffs pointed to a lot of other APK changes besides just the December and Bluetooth fixes. When I updated to 4.2 on my 32GB N7 I was getting about 25% battery life I was getting in 4.1.2. Really hesitant to upgrade beyond 4.1.2 again so I don't have to redo all my apps once again.
|Re: Nexus 7 battery drain after 4.2 udpate||Cori27||11/28/12 8:32 AM|
I don't think the battery life has changed... I had 33% last night and this morning it's dead.
I don't recall that happening before but I never kept really good track in the first place, so I can't be 100% sure. Only after the update to 4.2 have I found it 100% dead, never before.
|Re: Nexus 7 battery drain after 4.2 udpate||Becky Lovre||11/28/12 9:49 AM|
|Re: Nexus 7 battery drain after 4.2 udpate||Becky Lovre||11/28/12 9:57 AM|
I love d android OS but my only problem wit it is that d OS seems to be a very good battery drainer and I think google should do something abt that when building d next generation of its OS.
|Re: Nexus 7 battery drain after 4.2 udpate||Jon Bautista||11/28/12 1:10 PM|
I updated my N7 when I had 50% battery left. That was halfway through the day. I had to charge it overnight as I was using it extensively; the battery was at 14% by night time. However, I disconnected the charger this morning and after about an hour of being in sleep mode it still shows that it's fully charged. As a side note, I was able to improve battery life after the previous update by disabling the sync option in Google Currents, followed by a reboot. Whether or not this works for the new update is yet to be seen. I will update with some screen shots of the battery usage later.
|Re: Nexus 7 battery drain after 4.2 udpate||Brandon Fitzgerald||11/28/12 1:26 PM|
Thanks for the update Jon! Would love to see those screens when they are available. I will probably update to 4.2.1 and try my own tests as well. Worst case I can downgrade back to 4.1.2 and root to disable the system update prompt from displaying every half hour.
|Re: Nexus 7 battery drain after 4.2 udpate||Jon Bautista||11/28/12 11:05 PM|
Here are the screenshots I said I would post by the end of the night. The first is my device's brightness level. The second is the battery's status after almost 2 hours of being disconnected from the charger (sleep mode/no use). The last screen shot was taken 9 hours later (moderate use). I will post one final screenshot in the morning, showing the battery's status after leaving it asleep overnight. So far it looks like the battery is not draining as fast as it did when they rolled out the 4.2 update. Keep in mind that I took some extra steps that might have contributed to this; i.e. clearing system cache, disabling Google Currents sync, rebooting device. The battery didn't seem to drain as fast after that and it seems like that carried over to the 4.2.1 update. One thing is for sure, 4.2.1 seems to have fixed the lag. I hope you are all having a better experience with 4.2.1!
|Re: Nexus 7 battery drain after 4.2 udpate||Jon Bautista||11/29/12 9:27 AM|
*UPDATE* Here is the final screenshot taken about 11 hours after the last one. I left the device in sleep mode overnight and as you can see it went from 73% to 65%. That's about an 8% drain as opposed to the 65% last time around. So that concludes, at least for me, that the battery usage is back to normal. Hope everyone else is having the same luck!
|Re: Nexus 7 battery drain after 4.2 udpate||slwd89||11/30/12 5:05 PM|
Don't think you should assume that's a bug.
|Re: Nexus 7 battery drain after 4.2 udpate||slwd89||11/30/12 5:06 PM|
>random square on the home page before unlocking - check
It's not random, click on it. Swipe it as well. It's a space for lock screen widgets.
|Re: Nexus 7 battery drain after 4.2 udpate||Benj255||12/2/12 1:51 AM|
What fixed the drain for me, was disabling wifi location, it was keeping wifi awake 24/7, i get an annoying message in google now, but my battery drain is minimal, also, the bold hour on the clock is not a bug.
|Re: Nexus 7 battery drain after 4.2 udpate||dullknives||12/2/12 7:16 AM|
disabling wifi in location services fixed my battery drain as well. unfortunately it takes my gps 4-5 times longer to lock now and the accuracy sucks. before 4.2 i kept it on all the time and never had any battery drain issues. definitely a bug imo.
|Re: Nexus 7 battery drain after 4.2 udpate||Risa Jiron||12/2/12 10:27 AM|
No change to battery drain with 4.2.1 :-(
Also-- it seems to take forever to just get a decent charge going! And with this past update, if you let the battery drain completely you have to pies power button for 30 seconds or it won't turn on our charge. I have nexus tablet.
|Re: Nexus 7 battery drain after 4.2 udpate||erre vath||12/4/12 3:11 PM|
i have the same problems with my n7.usually i do 4 hour of screen for a one cycle of battery,but during the night battery falls also 10-15%! it's crazy!
in a cycle , during the first night the battery consumption was normal (3%) while in the second night was drastic! (17%). ps I was careful to close all applications.
|Nexus 7 battery drain after 4.2 udpate||homeviachina||12/5/12 4:11 AM|
The squares on the edges let you swipe to camera (right) or some other app of choice (left) while in lock mode.
Battery drain is killing me.
|Re: Nexus 7 battery drain after 4.2 udpate||Cahyo Ekono||12/6/12 9:42 PM|
So do I . . .
|Re: Nexus 7 battery drain after 4.2 udpate||Sasha Alexander||12/9/12 8:06 AM|
Just installed the update...KNEW I SHOULDN'T HAVE!!!! and got this stupid rectangular box and the battery drained over night. Before that it was up for 4-5 days.
this is ridiculous, someone please post a fix.
|Re: Nexus 7 battery drain after 4.2 udpate||Ken Ric Ong||12/10/12 11:35 PM|
Just bought N7 and after I read this thread, I am wondering if I should have stick to iPad mini...
|Re: Nexus 7 battery drain after 4.2 udpate||Muhammad Mulla||12/11/12 12:55 AM|
In spite of the few issues we have experienced I still prefer using my N7 over my iPad.
|Re: Nexus 7 battery drain after 4.2 udpate||John VS||12/11/12 11:13 AM|
Since the 4.2.1 update the problem seems to have gotten better. There is one large battery drain on my Nexus 7 called "Fused Location". It is using about 50 per cent at all times and even doing a forced stop doesn't seem to help. Does anyone know what this app is for and what it is doing?
|Re: Nexus 7 battery drain after 4.2 udpate||Rdr_xxx||12/12/12 8:06 AM|
Same battery problem here. For me, the problem apps, when battery drains in standby, were:
- Google Play Store
Running OS 4.2.1 on a Nexus 7.
There should be no excuse for Google's own OS and app to fail this way. How could they miss regression testing battery life on a mobile device??
|Re: Nexus 7 battery drain after 4.2 udpate||Barry Strum||12/17/12 11:27 AM|
SO.........................WHAT is the company DOING about this? I have attempted to contact the computer retailer where I purchased this device.....Micro-Center in Cincinnati Ohio.....a digital stonewall..................for crying out loud, just send a cab here that will run straight to the silly Apple Store and be done with it.......no one should have to "adapt" to this situation..the company needs to get out in front of this, as it appears that it is clearly their issue, not the incompetence of users.
|Re: Nexus 7 battery drain after 4.2 udpate||Brandon Fitzgerald||12/17/12 11:40 AM|
I've found that if I sign into all the Google apps except Gmail (youtube, currents, magazines, maps, etc) and disable background sync for all of them I can get around 7 hours on screen time on 4.2.1. Not sure if this will work for anyone else though. From my observations it looks to be a bug in the OS where the apps will continue to try to sign in for the first time (even though they don't have permission to) jacking up the Android OS resources to a higher than usual battery usage (> 20%). After I did this my Android OS battery usage went down to around 5% and battery life has gotten much better.
Worth a try since it looks like Google isn't pushing out a 4.3 or 5.0 anytime soon.
|Re: Nexus 7 battery drain after 4.2 udpate||Ken Ric Ong||12/17/12 3:41 PM|
I did a factory reset and it worked for me. Battery level lasted well over 3 days but still, coming from my previous iPad 2 experience which lasted well over 5 days, Nexus 7 is found wanting.
Also certain website like this one is very slow on Nexus 7, any reason for this?
|Re: Nexus 7 battery drain after 4.2 udpate||Sang nhay||12/20/12 3:45 AM|
hope they fix soon it's really annoy ....4.1 is fine
|Re: Nexus 7 battery drain after 4.2 udpate||DionJL||12/23/12 8:29 PM|
I'm having the same issue. The tablet rubs through a full charge in under 11 hours with no use as shown in the attached screen shot.
|Nexus 7 battery drain after 4.2 udpate||Angel Alegria||12/26/12 7:42 PM|
Same problem here with my nexus7.
I left it almost fully charged this morning at home. I came back this evening and it tells me it os at 2% charge. This is my second nexus 7 after i returned the first one for bad speakers.
I almost bought a mini ipad. Now i am starting to regret this buy. I think next year i am buying the second revision of the mini.
|Re: Nexus 7 battery drain after 4.2 udpate||IronSean||12/26/12 8:47 PM|
I'm experiencing the same issue. Fused location is keeping my GPS on constantly, regardless of if GPS is enabled or the application is force stopped.
|Re: Nexus 7 battery drain after 4.2 udpate||IronSean||12/26/12 8:49 PM|
I'm experiencing the same issue. Fused Location keeps the GPS active the entire time the phone is on, regardless of if GPS is enabled or if the application is force stopped. It seems like it's activating the GPS hardware and then never deactivating it.
|Re: Nexus 7 battery drain after 4.2 udpate||zalias ZaliaNoSiS||12/27/12 2:52 AM|
Had similar issues *Media server eats a lot of memory, fast battery drain), Full phone reset + 2x battery app (recomended tweaks for optimizing ussage) + google account disable all synchronization = 95% battery left after 10h 29min idle. Changes performed on Nexus 4 with android 4.2.1.
|Re: Nexus 7 battery drain after 4.2 udpate||zalias ZaliaNoSiS||12/27/12 2:58 AM|
This is how battery usage looks now.
|Re: Nexus 7 battery drain after 4.2 udpate||nrsantos||12/27/12 3:06 PM|
Errr I have the same problem on my nexus 7 tablet... I found every day tablet died... :(
|Re: Nexus 7 battery drain after 4.2 udpate||Flight23||12/28/12 8:16 AM|
|Re: Nexus 7 battery drain after 4.2 udpate||ReneaB||12/28/12 8:46 AM|
Hi I just got my nexus 7 for xmas and this thread is great as I was seeing a HUGE battery drain in just sleep mode overnight and throughout part of the day. I have the lastest android version 4.2.1. I went through and disabled Google Currents as suggested but, how do you 'clear system cache'? Sorry for my stupidness. I'm a new android user and not sure how to do that step.
|Re: Nexus 7 battery drain after 4.2 udpate||Nic B.||12/28/12 9:52 AM|
Just called google. they were no help. they said that they have no new information on a system update regarding the battery drain or any other issues. i encourage more people to call. the person on the line said that I was the first person to call with a complaint about this subject, are you kidding me? the number was tricky to find but its 1-855-831-3987.
hope they come out with an update soon!
|Nic B.||12/28/12 9:56 AM||<This message has been deleted.>|
|Re: Nexus 7 battery drain after 4.2 udpate||Nic B.||12/28/12 9:57 AM|
Ok, to clear the cache. power off the device, than turn it on holding the power button and the down volume key. it will boot to a new screen. once there, use the volume key to navigate to recovery mode, then press the power button once. once in recovery mode press the power button plus the up volume key at the same time (dont hold down) then use the volume keys to navigate to clear cache. then press the power button and you should be good.
clearing the cache on my system didnt help the battery life though.
|Re: Nexus 7 battery drain after 4.2 udpate||Paul||12/28/12 10:57 AM|
Although I haven't commented on this thread yet I wanted to assure you that we are listening to your feedback and are exploring the issues brought up here.
One thing to check, if you haven't already, is to make sure that there isn't an app you've installed on your device that's the source of the problem. The easiest way to do that is to boot up in safe mode as outlined in these instructions. If you boot up in safe mode and run your device for a few hours and battery usage appears normal, that's an indication that something you've installed on your tablet is the source of the battery drain.
|Re: Nexus 7 battery drain after 4.2 udpate||Flight23||12/28/12 11:18 AM|
Paul, I can assure you this is not an app related issue, it is related to the Android OS updates. It is also not just limited to the Nexus 7 tablet, it happens to Nexus phones, Galaxy phones, and other Android devices. On my Galaxy S2 (Sprint) immediately after the ICS update my battery began to drain at a rate of 2% a minute when the screen was on, giving me at best 45 minutes of use. Turns out after the update multiple Sprint Galaxy S2s started somehow incorrectly charging or discharging their batteries such that it literally destroyed the battery (the battery provides less and less life over a period of a month to the point that it is useless). Physically the battery bulged out such that you could spin it on a table. This happened to hundreds if not thousands of carriers across various carriers, you can search for 'battery drain after ICS update' or any variation with 'battery bulge' or look at the community forums on each of the carriers and the one unifying theme is that the devices were perfect until the updates and then suddenly the battery began draining rapidly.
My Nexus 7 tablet is only about 2 months old, it has about 5 non-default apps installed on it (mostly google apps, but MX player, Mobiplayer, dolphin browser, and maybe 2 more. It was fine when I first got it and battery life was amazing. Battery life is still good but after the software update it got at the end of November it has started to drain even when in standby/idle such that the battery is completely dead within 36 hours with absolutely zero use.
Does Google test these updates on more than one device before pushing them out? Perhaps they should update all of the Google employee devices first, as Im sure that there are thousands of android phones and tablets in the hands of Google employees, and wait at least a month or two after that before releasing something to the public that costs valuable time, money, and is potentially damaging to the devices.
|Re: Nexus 7 battery drain after 4.2 udpate||Flight23||12/28/12 11:23 AM|
|Re: Nexus 7 battery drain after 4.2 udpate||Richard Desrosier||12/28/12 3:37 PM|
I'm lucky if I get 12HRs before I need to plug it back in. I'm back to using my kindle fire until they come up with a fix. It's sad.
|Re: Nexus 7 battery drain after 4.2 udpate||ReneaB||12/28/12 5:50 PM|
Thanks Paul and everybody.
Both my boyfriend and I bought the nexus 7's at the same time. 32GB, 4G version. His is doing pretty well on battery life. The only differences are perhaps that I had installed quite a few wallpaper apps...some live wallpaper apps. I immediately thought they were one of the culprits so I uninstalled but, it still wasn't better. So,this morning I restored to factory settings, didn't install any wallpaper apps or any other apps which I thought might be 'questionable'. I disabled google currents. We were out and about with them for approximately 5 hours total. We both had the tablets with us. He was heavily using his for navigation (Waze app) and I would periodically check email, etc. all using AT&T data. I also turned wifi completely off so it wouldn't look for any. During that time my battery went from about 71% to 56 % by the time I got home. My boyfriends went from 97% to about 40% however he was HEAVILY using navigation on it over cell data...it never went to 'sleep' except for about an hour break. His seems to perform the way we would expect them to. The only issue he has is his takes forever to charge.
I just cleared the system cache as mentioned above and rebooted. It was at 56% battery life when I did this. It is now in sleep mode, at home on wifi. I'm letting it sit for a few hours to see if it further drains in sleep mode. Next thing I will try is to bring it up in safe mode and run for a few hours to see if there is an app that is causing it.
I'll post updates later....if you are interested and if everyone else is too.
I had read RAVE reviews about the nexus 7. I don't want to give up on it. I'm a person that usually loves apple products and my ipad 3 gets awesome battery life. I wanted a smaller tablet. It was a choice between the nexus 7, the ipad mini, and the kindle fire hd. The nexus had better reviews and comparison results than the ipad mini AND the price is right! Plus, given that the screen resolution is better, I was sold. I do want to LOVE it as much as my ipad. :D
|Re: Nexus 7 battery drain after 4.2 udpate||ReneaB||12/30/12 9:50 AM|
So after a few days, I can share a few observations.
After restoring to factory settings, the battery has been much better. I didn't install any live wallpapers or any other wall paper apps. (Not that they were the culprit, dunno but, haven't installed any). It still didn't seem ideal so thought I'd try a few other things.
Last night I decided to turn the GPS off completely. I used the nexus for some reading and email checking, etc. When I went to bed, I also turned wifi completely off so that in sleep mode, wifi was off and so was the GPS. It was at 81% battery when I went to bed and after about 6 1/2 - 7 hours of sleep mode, this morning it was at 78%. Much improved over what I had before.
Is it the wifi or gps? Or the fact that on wifi it is updating stuff in the background? I think tonight I'll turn the GPS on but leave wifi off overnight.
Today, I kept the GPS off but was out and about using mobile data for email mostly. It went from 78% to 72% in a little under 4 hours.
I'll mention that while at home, I turn mobile data completely off.
It seems better but, still not ideal.....I still can't tell if it is an app using wifi or GPS or if it is something in the operating system. I still don't think it will ever get the 300 hours of battery life in sleep mode like it states on the website. I will say with my ipad 3, yep, I get at least that in sleep mode...probably even better and I don't ever turn wifi, data, or location services off on it. In sleep mode, it appears that the nexus really doesn't 'sleep'. The ipad truly does sleep in sleep mode.
I am happier with the battery life on the nexus during the time I'm using it. Although I'd prefer not to have to constantly turn things on/off to improve the battery.
I hope this helps!
|Re: Nexus 7 battery drain after 4.2 udpate||Joel Luth||12/30/12 11:32 AM|
I'm having the same problem - my N7 simply won't sleep. After 20h53m on battery in standby, 'Android OS' reports a keep awake time of 20h43m. My battery is at 66%, which works out to a 100% battery rundown in 48 hours on standby. I'm tired of fiddling with settings and radios trying t find out what the problem is. For once I'm going to take the battery manager at its word and accept that the problem is Android itself.
Now I understand why device manufacturers are so slow to upgrade Android versions. I wish I had exercised the same caution with my Nexus. I'm just glad I didn't get my mom an N7 for xmas like I had planned, I would have been very embarrassed. Looks like my wife will get her wish and our 10" tablet will be an iPad.
|Re: Nexus 7 battery drain after 4.2 udpate||nrsantos||12/30/12 12:50 PM|
As I said earlier, I was having the same problem in N7. I have done the factory reset as someone suggested.
The battery seems to be much better with almost 60h life with normal use (email, web and some playing of jetpack).
I have only installed one game, disable currents sync and I only use Wifi (gps and blueth off).
I didn't understand yet where is the problem....
I hope that my experience helps someone.
|Re: Nexus 7 battery drain after 4.2 udpate||ReneaB||12/31/12 7:51 AM|
Last night when I went to bed, battery was at 37%. I left wifi on all night but GPS off. It was at 33% this morning. So, only 4% loss overnight.
I will also mention that I hadn't charged it since Saturday. I had checked email on it, read books, used flipboard, played one game, and watched a video. So, with use, probably a couple of days of battery life. Pretty good! Still want to have it truly sleep though and yep as mentioned, not have to disable/turn stuff off on it.
|Re: Nexus 7 battery drain after 4.2 udpate||Richard Desrosier||12/31/12 10:59 AM|
this might not help but my N7 is always reporting my "screen" as the Power drain. I have been using my kindle while Google tries to resolve this issue. In settings under battery it always has the screen at the top at 80% or better. This is with it sitting without use all day. For some reason it thinks the screen is on. It also says it in the time running area. I've tried every recommendation on this page and nothing is working. Please keep looking this is a real issue and it's driving us all nuts.
|Re: Nexus 7 battery drain after 4.2 udpate||Joel Luth||12/31/12 12:27 PM|
Well I tried a couple things on my N7 and my battery usage became so good I thought the meter was broken. I'm at 19h (mostly standby) and 95%. Android OS is 13%, Tablet Idle is highest at 58%. Everything looks great. Before I would have been at ~50% battery in the same time frame with Android OS at 90%+. What I changed:
- Remembered my second account, set Currents to sync only when charging on that acct (had already done this on my primary acct)
- Simple reboot
And by 'simple' I really do mean simple. Power off, power on. No funny key combos, no factory resets, no removing the battery.
I know I should not have changed two things at once, and this probably isn't helpful. I don't know what it means. I suspect JB+ may have some sort of bit rot that creeps in at extended uptimes. Maybe this is why we see some reports of factory resets helping but problems returning over time. This would be good in that a reboot is a low-pain workaround. But I also know that such problems can be difficult to track down and fix.
I'm going to start slowly re-enabling services (GPS, Now, Location, sync on apps, etc) and see how it goes. If I see battery problems returning I'll try a reboot before disabling what appears to be the offending service. I'm glad it's "fixed", but I don't like problems that mysteriously disappear. I won't be comfortable without a root cause.
|Re: Nexus 7 battery drain after 4.2 udpate||Richard Desrosier||12/31/12 7:32 PM|
I think I found the problem with my N7. It looks like it's the case magnet or the sensor in my N7. It looks like the screen is eating up battery when I close the cover and set it down. I tried leaving the cover open today and it used very little power. I'll try some more in the A.M. It's a MOKO case from Amazon. I know they had an issue with the magnets being too strong on the first run and it was shutting down the tablet when you folded the case back. Maybe now its too weak. The strange thing is it only started giving me trouble after the update. maybe they changed the sensitivity level? I'm not really sure how it works in the N7. I hope this helps some of you.
|Re: Nexus 7 battery drain after 4.2 udpate||Ruikai Chen||1/1/13 3:35 AM|
I'm having the same problem. It's a 32gb 3G device and updating to 4.2 was the first thing I did after receiving the nexus.
As someone suggested I turned WiFi location services off and that fixed it. Before, android system would use most of the battery during standby.
I attached a screenshot where you can see the battery consumption rate during standby before and after disabling WiFi locations (Monday 31th around 2am). The gradient became a lot more shallow. Before it would use about 50% battery over a day of standby.
Is there a way to find out which app is using the service all this time? Or can the service be active by itself?
|Re: Nexus 7 battery drain after 4.2 udpate||Flight23||1/1/13 10:51 AM|
Factory reset seems to have solved the problem on mine, battery life dropped minimally overnight on standby last night.
|Re: Nexus 7 battery drain after 4.2 udpate||Evan Selinske||1/2/13 3:47 PM|
"Paul" please take note: Got my Nexus tab on Xmas... worked great for two days while I ignored the prompts to update. After doing so, the battery drain was immediate and dramatic.
Every time I woke up the tablet it was not hot, but the bottom half (presuambly where the processor is) was just slightly warm, so it was clearly chugging along full time doing something and killing the battery.
The big offender on my device according to the battery stats was the Play Store. After some more nosing around it looked like Play Services was running constantly no matter what I did so I ignored all the dire warnings and disabled it.
Result: After one day (it's early, I know) all seems peachy. Except of course for the effing update in the first place. Hope that helps.
Hope that helps, cheers.
|Re: Nexus 7 battery drain after 4.2 udpate||Nic B.||1/6/13 8:46 AM|
I think I might have found fix. in Google currents, try disabling background syncing. this seemed to help me
|Re: Nexus 7 battery drain after 4.2 udpate||Joel Luth||1/6/13 9:00 AM|
I disabled Currents sync and rebooted and my standby battery usage improved greatly (see my post from 12/31/12). Since then I re-enabled Currents sync, as well as GPS, and my standby battery usage is still great. So I'm not convinced Currents sync was the cause of my prior standby battery consumption. I've disabled Currents sync again (since I don't really care about it). Next I'm going to try the Big One: re-enabling Now.
|Re: Nexus 7 battery drain after 4.2 udpate||Robin Knapp||1/7/13 8:32 AM|
Not sure if this is the same issue - I did not have any issues after updating to Android 4.2.
But I have similar issues when I got a new Wifi Router.
Other Devices (also Nexus 4) work fine with the new router, but the Nexus 7 somehow loses connection when in standby and Google Services keeps the device awake.
The old Router was a 802.11b/g router, the new one is a 802.11b/g/n.
Hope this helps...
|Re: Nexus 7 battery drain after 4.2 udpate||Robin Knapp||1/7/13 8:37 AM|
I'm not sure if this is the same issue.
I initially did not have any issues with 4.2 on my Nexus 7, but since yesterday I have a new Wifi router and found that my Nexus 7 loses network connection when in standby.
It still shows connected when turning on, but the Wifi symbol is grey (which means no active connection to google).
Might be related to 802.11n? The old router was b/g only.
Hope this helps
btw. my Nexus 4 does not have any issues with this new router.
|Re: Nexus 7 battery drain after 4.2 udpate||Robin Knapp||1/7/13 9:03 AM|
btw. it could be caused by this bug: http://code.google.com/p/android/issues/detail?id=40065
|Re: Nexus 7 battery drain after 4.2 udpate||bng23||1/9/13 12:49 PM|
It's not the wifi, in 3 hours, it lost 7% from 100%, in another 4:30 hours, it lost 15% more, this time I purposely turned off WIFI (airplane mode). Needless to say, this doesn't happened on the iPads.
btw, all sync's and notifications are off. I still can't figure out why. Some one from the google team please step up to the plate. Got the latest release.
|Re: Nexus 7 battery drain after 4.2 udpate||Joel Luth||1/11/13 6:52 PM|
My struggles continue on my N7. With Location on but GPS, off, Google Now on, after 2d 9h on standby I was at 53% battery. Not bad, though not as good as I had seen previously with Now off. Android OS was 57% of usage with 15h 42m keep awake.
I decided to turn Now off again and retest to get some numbers. I turned Now off, rebooted the device for good measure, and charged it. After 1d 11h standby I'm at 52% battery capacity! Android OS is 75% and 23h 45m keep awake.
Something is definitely screwy here. The only common thread I've seen so far is that when I see excessive standby battery usage, the top consumer is always Android OS. So, I'm blaming Android (not a 'rogue app'). As far as I know Google hasn't even acknowledged that there is an issue yet, so I have little faith in them fixing it. I just hope my Galaxy Nexus doesn't catch this disease.
|Re: Nexus 7 battery drain after 4.2 udpate||Flight23||1/13/13 10:53 AM|
Everyone who is having battery issues after the update should do a factory reset and then report their results. The vast majority of people I know with the issue had it resolved with the factory reset. The Play store saves all of your apps so it is pretty easy to restore the apps.
|Re: Nexus 7 battery drain after 4.2 udpate||Joel Luth||1/13/13 12:15 PM|
I've had my N7 for less than two months, and it needs a factory reset already? Am I going to have to reset it every month or so to keep it working? Doesn't seem like much of a solution. Besides, I've seen plenty of reports that factory resets either didn't help at all or only 'fixed' the problem for a few days before it returned. I'm not too hopeful a reset is going to actually fix anything.
|Re: Nexus 7 battery drain after 4.2 udpate||Flight23||1/13/13 12:18 PM|
The factory reset has nothing to do with how long youve had your N7 it has to do with the update being installed after youve installed certain apps. If you are unwilling to do or try what has the potential to fix the problem, enjoy your diminished battery life.
|Re: Nexus 7 battery drain after 4.2 udpate||Joel Luth||1/13/13 2:15 PM|
So a factory reset is required after each Android update? A reset involves more than simply letting Play re-install apps - a lot of configuration info is not restored and has to be done manually.Seems a bit of a sledgehammer just to take an OS update.
|Re: Nexus 7 battery drain after 4.2 udpate||Robin Knapp||1/13/13 2:52 PM|
In my case disabling 802.11n Wi-Fi in my router stopped the battery drain.
I had Google Services on top in battery usage.
Another solution is to disable the Wi-Fi Optimiazion option in advanced Wi-Fi settings, but without this optimization, Wi-Fi uses more battery.
|Re: Nexus 7 battery drain after 4.2 udpate||Flight23||1/13/13 6:04 PM|
Disabling functionality is not really a "solution." After the factory reset I can have everything enabled that has been mentioned on this thread as a 'solution' and my battery drains less than 7% in 24 hours with no use, and lasts 8-9 hours with constant use.
Joel you can do what you please, nobody said a factory reset was required after every Android update, but in this case, yes it is. If you choose to ignore that complain all you want, it wont solve your problem.
|Re: Nexus 7 battery drain after 4.2 udpate||GdM88||1/13/13 8:10 PM|
I have a galaxy s3. I fixed the issue on mine by signing into Google +. It was the only app I hadn't finished setting up. Haven't even seen Google services in my battery usage since doing that. I went into accounts, Google, and went through each of the Google items and the only one not setup for me was G+.
|Re: Nexus 7 battery drain after 4.2 udpate||Robin Knapp||1/14/13 12:11 AM|
Well, in my case it it.
Theres seems to be a bug in Android 4.2.1 which drops Wi-Fi connection in standby. This causes massive wakeups by "Google Services" which try to sign in but can't - in an endless loop.
So if you have battery drain and greay wifi bars after standby, it is very likely to be caused by this issue (and hopefully fixed in a future release).
Looks like a driver implementation issue, and a factory reset will not resolve these kind of issues.
|Re: Nexus 7 battery drain after 4.2 udpate||dimedrolum||1/14/13 12:13 PM|
Guys, don't you use magnet case with your N7? May be problem is in it. I've just put my N7 out of the case and it began to consume battery less than before.
|Re: Nexus 7 battery drain after 4.2 udpate||Devin Simmons||1/14/13 1:31 PM|
Im thinking there is an issue in the kernel for 4.2.1, that needs to be fixed, but Im sure there is no need to worry, once 4.3 is released it should be fixed.
|Re: Nexus 7 battery drain after 4.2 udpate||bng23||1/14/13 1:48 PM|
A factory reset is what I am trying to avoid. I have to reinstall everything, redo all my email accounts, sign-ins, etc. I have done this twice already before the battery issue, last time was with an app launching at a snail pace, it took 2-3 minutes for the bloomberg app to update the news feed, in another os, it took 10 seconds.
My frustrations is with android, a modern OS do not behave like this. Some say the best...?
Thank you for your suggestion though.
|Re: Nexus 7 battery drain after 4.2 udpate||jai_ko||1/15/13 4:23 PM|
the square thing is a lock-screen widget. swipe the clock to add something to it.
|Re: Nexus 7 battery drain after 4.2 udpate||ReneaB||1/15/13 5:01 PM|
I haven't posted any updates in a while but, here is what I have observed.
With the gps off, I get a much better battery life. Turning location services completely off, definitely improves it even further.
Last week I traveled on a 4 1/2 hour trip. I turned location services on but left the GPS off still. The nexus was about 90 % or so charged. I checked email once or twice and read a book for a bit, then put it in standby mode. I didn't charge it that night as it was about 80% charged. The next morning, different story....in standby mode, the battery life dropped significantly during the night...just like it did when I first got it. I had been getting much better battery life in standby mode after factory reset and turning location services off. I lost about 20% battery life in standby that night!!
So since then though, I found a cool widget (Elixir 2) that allows me to put the toggle shortcuts on the main screen. What I started trying this week, as of Monday night was before I put it in standby mode, toggling the wifi completely off and making sure mobile data was off. Then when I pick up the device, I'd turn wifi or mobile data on to use it, then repeat toggling it off before standby. I have not charged it in almost 2 days. The last charge was overnight on Sunday. Since then, I've probably done various things like read email, search the web some, read my book. My battery is still at 80%!! This is with toggling wifi and data off before standby mode....it has improved my battery life significantly. I notice little to no battery usage in standby with both of these completely off. It is about 1%, if that. Today, it was in standby most of the day with both off and the battery percentage didn't change at all.
Now, I feel that I shouldn't have to constantly toggle these off to get a good battery life. Again, with my ipad 3, I never turn them off and it will sit for days on standby without using any battery. But, I am still loving the nexus 7....I am. I just wish they could fix this problem.
So, it does make me think something is going on in the background in standby mode when wifi is on or data is on. Also makes me think there's something further related to location services. I'm not convinced either that factory reset really made a huge difference for me....I do think there was some app that I installed when I first got it that was causing a problem and the factory reset fixed that but, I don't know for sure.
|Re: Nexus 7 battery drain after 4.2 udpate||Robin Knapp||1/16/13 12:09 AM|
Mine can sit for approximately 9 days with wifi on, so it is not a general problem.
As I already wrote, I had to either disable 802.11n Wifi in my router, or disable the Wifi Optimization feature in advanced wifi settings, otherwise the battery would drain completely within one day, caused by "Google Services".
Try this, it fixed it for me.
|Re: Nexus 7 battery drain after 4.2 udpate||nrsantos||1/16/13 1:56 AM|
As said previously, I have reset my nexus 7 after found some problems with battery.
After reset, it's all ok. I have also a magnetic cover but I didn't find any problem with that... just reset and that's all ok! I also disable google currents sync and wireless connection only when is active. Google services location is also off.
Battery life of my nexus with my type of user is about 90h.
|Re: Nexus 7 battery drain after 4.2 udpate||Joel Luth||1/27/13 10:18 PM|
Well, after a factory reset my standby usage was better, but after about a week it went bad again (mostly "Android OS"). Just like others have reported. I'm disappointed but not surprised.
I think we're facing a couple difficulties here. First, we're chasing multiple causes for the standby battery drain. Some of us see Android OS as the big consumer, others Play, Maps, Google Services, whatever. What helps one person may not help others because they have a different root problem.
Second, the OS is simply unreliable. I, like most others, have taken the approach of change parameter X, observe change in behavior Y, infer that X causes Y. However, I've observed the same changes in behavior when I haven't changed anything on the tablet except recharge it. Every discharge cycle is a dice roll. Just because battery usage got better or worse, we can't assume that whatever we just did was the cause. It likely would have happened without us doing anything. If that's the case, we're pretty much sunk. We as users with our black-box testing approach just don't have the visibility into the internals of the OS to determine what is going on. We're at the mercy of Google to diagnose and fix this, but since (as far as I know) they haven't even acknowledged the problem yet, I'm not holding out much hope. This is behavior I'm either going to have to learn to live with or switch to a different product.
|Re: Nexus 7 battery drain after 4.2 udpate||Uniquenn||1/29/13 12:50 PM|
In last couple of day I am having a problem with battery usage. Mine shows google play using 45% of power. I use to have no problem getting through the day. Now it is dead by evening. What gives Google?
|Re: Nexus 7 battery drain after 4.2 udpate||Uniquenn||1/29/13 12:54 PM|
You know what is the only thing I really had that is different is that I install the Facebook page manager and that is really the only thing I can see that is different now in the last few days with my power getting sucked down when my nexus 7 is resting with the screen off. I am going to uninstall the FB page manager .. it's worthless anyway.
|Re: Nexus 7 battery drain after 4.2 udpate||bng23||1/29/13 1:04 PM|
The os has lots of goodies, apps in it, but the thing that pays google's bill is the ads. Android is just a venue to achieve that goal. What i mean is that it's not on the top of their priority list.
I wish google would just come out and said "There is a minor problem, we're addressing it and stay tuned." This would save us the witch hunt.
I also reset it, it's a little better, but I also replaced the dynamic wallpaper with a static one, it was consuming lots of juice.
|Re: Nexus 7 battery drain after 4.2 udpate||Josh Lim Guorong||2/23/13 8:10 AM|
I had random screen flashes taking up to 40-60% battery in a 7 hour sleep duration. Hateful it is.
Lag only abit, most disturbing is still battery eating up issue during sleep/standby time. When it is supposingly doing nothing!
Quick google, 220.127.116.11
|Re: Nexus 7 battery drain after 4.2 udpate||Joel Luth||2/24/13 7:09 AM|
I think I found my problem. Using CPU Spy I could see that my N7 was *never* going into the deep sleep state, even when left overnight. So I installed the Better Battery Stats app and let it sit overnight again. In BBS I then checked kernel wakelocks and found that "baseband_xmm_power" was constantly keeping the device awake.Some quick searching on this turned up these two threads in particular:
Like many others, my device has no SIM installed and is set to airplane mode. Very annoying that the device can be kept awake by the radio with these settings.
If you have a WiFi-only N7 then you have a different problem (I'm hoping 4.2.2 provides a fix for you guys). But I can highly recommend the BBS app for troubleshooting, it's worth the small purchase price (and is free to xda-dev members). Note that the 4.2.2 update has not resolved this for me.
So while I haven't solved it yet, at least the problem doesn't feel like a ghost anymore. I've also learned a great deal about Google in the process, and none of it good. There are many people with this problem and an Android Issue has been filed. And yet Google remains silent, completely ignoring its paying customers (this isn't like Gmail or +, this thing cost me real $ paid directly to Google and I expect them to act accordingly). Google really needs to get its head straight on customer service. For me, I'm going to look into swapping out my 3G N7 for a WiFi-only model. I'm also strongly considering going back to iOS.
|Re: Nexus 7 battery drain after 4.2 udpate||bobsscgirl||2/24/13 8:54 AM|
I am having the same problem. With no case magnet that I can find and not being sure what a sensor is I am going to try leaving the case open. Fill me in how any other hints, PLEASE! My battery drains fast!
|Re: Nexus 7 battery drain after 4.2 udpate||JoelLuth||2/24/13 9:46 PM|
Charge your device to full charge (to reset battery statistics), then unplug it and let it sit, unused, for 8 hours or so.Then go into Settings->Battery to see how much your battery is being used, for example if you're losing ~3% per hour of standby that would be excessive IMO. That screen will also show which apps are using the battery. If you have one app that is top user by a large margin you can click on it to get more info on what it is doing. After that you may need to try other apps to get more detailed info. I"m using CPU Spy, Watchdog Lite, and Better Battery Stats to track down my issue.
|Re: Nexus 7 battery drain after 4.2 udpate||bobsscgirl||2/25/13 6:34 AM|
Thank you for the reply. I will try this and get back to you. "excessive IMO" plz translate?
|Re: Nexus 7 battery drain after 4.2 udpate||JoelLuth||2/25/13 8:42 AM|
Sorry - "IMO" = "in my opinion". I can see 20% or so of battery drain when the device sits unused overnight, roughly 8 hours. That's too much. When things are working properly (which does happen from time to time) I can see 1-2% battery drop in the same period. I guess what I'm getting it is - part of determining your problem is quantifying how much of a problem you have. This is one way to measure that.
|Re: Nexus 7 battery drain after 4.2 udpate||bobsscgirl||2/25/13 9:14 AM|
Thanks for getting back to me. I can leave my nexus unused overnight and did overnight last night. It went up to full charge and is dipping again. My husband is trying to investigate a possible issue with mediaserver. Anyone heard of that? Thanks for the imo education.
|Re: Nexus 7 battery drain after 4.2 udpate||JoelLuth||2/25/13 9:20 AM|
I have heard of that, although it's not a problem I am experiencing (yet). I think I've seen suggestions to clear the media cache (I don't recall the specific steps for that) so you may want to try that. I'm not sure what else can cause mediaserver to spin.
|Re: Nexus 7 battery drain after 4.2 udpate||bobsscgirl||2/25/13 9:32 AM|
The investigation continues. If you come across steps on clearing mediaserver plz give me a holler. That includes directions on where to find the steps.
|Re: Nexus 7 battery drain after 4.2 udpate||JoelLuth||2/25/13 11:04 AM|
|Re: Nexus 7 battery drain after 4.2 udpate||Evan Selinske||2/25/13 3:25 PM|
Mediaserver was the big offender for me. (Severe battery drain when "asleep" coinciding with a slightly warm lower left-hand side where I presume the processor is.) The solution was going into settings and apps and then disabling Mediaserver despite all the tablet's dire warnings about doing so.
So nothing terrible happened and it immediately solved the battery drain problem... and it didn't seem to adversely affect anything else either. The only effect disabling Mediaserver did have though, was that a couple of days later I realized that my calendar wasn't syncing. So... I re-enabled Mediaserver, the calendar started syncing again but the battery drain problem still magically disappeared for good. (Since the end of December, fingers still crossed.)
Give it a whirl, you've got nothing to lose.
|Re: Nexus 7 battery drain after 4.2 udpate||bobsscgirl||2/25/13 5:16 PM|
Thank you for the info and yes indeed will be doing as suggested. Will keep you posted. Here in the land of Dorothy and Toto snow is keeping us indoors so might as well solve this nexus problem!
|Re: Nexus 7 battery drain after 4.2 udpate||bobsscgirl||2/25/13 5:27 PM|
I went tppo disable mediaserver and do not see how to do it. Any advice on the trail to it and how to do it?
|Re: Nexus 7 battery drain after 4.2 udpate||bobsscgirl||2/26/13 8:47 AM|
Just an update still looking for the way to stop mediaserver. I found mediaserver bot did not see way to stop it.
|Re: Nexus 7 battery drain after 4.2 udpate||deedee553||2/27/13 2:09 PM|
I spoke with a customer service rep today about the extreme drainage. I have not done this yet but these are the steps he told me to follow:
Also the article for improving your batter life can be found here:
|Re: Nexus 7 battery drain after 4.2 udpate||Armin17||3/2/13 8:12 AM|
I have exactly the same problem. enough for 4 maximum 8-hour discharge by 45%.
|Re: Nexus 7 battery drain after 4.2 udpate||Serejka I||3/2/13 12:20 PM|
I have the same problem. Nexus 7 32GB 3G, version 4.2.2. About 6% discharge for every hour, it just lies on a table with black screen.
System battery monitor shows that battery discharges because of screen (about 70%-80%).
I've tried to return to factory defaults, stop google currents sync, stop automatic sync, use Airplane mode - no effect.
|Re: Nexus 7 battery drain after 4.2 udpate||JoelLuth||3/2/13 1:39 PM|
Can you try -
1) Charge device to full
2) Unplug and let the device sit without using it
3) After a few hours check the battery stats, including top app/% (looks like you've done this)
4) Check the % of time in each CPU state, specifically Deep Sleep (I use CPU Spy to check this)
5) If you have no or minimal time in Deep Sleep, check what is causing wakelocks (I use Better Battery Stats for this)
If you're getting a high % of wakelock time (compared to total time unplugged) from baseband_xmm_power, you're likely seeing issue 42993. I would suggest anyone seeing evidence of that post in that forum, and star the discussion to help bring it t Google's attention.
|Re: Nexus 7 battery drain after 4.2 udpate||Serejka I||3/3/13 1:46 AM|
I've tried all of this. So the results are very strange.
1. For first half an hour it was going very well - just 1% of power. Cpy Spy showed that 29 min it was "deep sleep"
2. Then for an hour and half it all started again - 1% of power for every 10 min. Cpy Spy showed that device was not in "deep sleep" at all, GSam Battery Manager showed that 75% of consumed power went to screen, kernel wakelocks main, baseband_xmm_power in total take about 5-6 min.
3. Then I adjusted all recomended in issue 42993 settings (disabled mobile data, disabled wifi location, no sim inserted, set airplane mode on), rebooted the device.
For an hour and half - 1% of power for every 10 min. Cpy Spy shows that device was in "deep sleep" all the time, GSam Battery Manager shows again that 75% of consumed power went to screen, but all the time screen was dark, kernel wakelocks total take about 5-6 min.
4. I even tried to turn off nfc, date sync - still no effect.
So I get that the device has no problems with wakelocks and "deep sleep", but consumes 1% energy for every 10 min of sleep mode. Battery Managers (standard and GSam) say that black screen takes 75% energy. As I can see the screen is really black, I see no flashes, no dim light or anything else.
|Re: Nexus 7 battery drain after 4.2 udpate||bobsscgirl||3/3/13 7:06 AM|
I really appreciate everyone posting their experiences. It seems that there may be more than one solution. I am listening........ HELP!!!!
|Re: Nexus 7 battery drain after 4.2 udpate||JoelLuth||3/3/13 11:27 AM|
Sounds to me like you have something different than 42993 since your baseband_xmm_power wakelocks aren't too high.Although I certainly could be wrong, I'm no expert. And unfortunately I don't know why your screen could be chewing battery even when you've confirmed it's off. You don't by chance have a case with a magnet in it do you? I've seen some posts where those cases can keep devices awake. Other than that all I can think of is some app poking at screen, though I realize that's not helpful.
|Re: Nexus 7 battery drain after 4.2 udpate||Helen Ochej||3/4/13 12:36 PM|
I've had my Nexus7 since December 2012. I don't use it every day, so I turn if off when I'm done with it. After several days of not using it, I find the battery totally discharged. The first time this happened, I recharged it, but had to reboot to get it to display. It just doesn't seem to hold a charge very long when it is not used every day. I'm disappointed when I pick it up when I'm going out, only to find it totally dead.
|Re: Nexus 7 battery drain after 4.2 udpate||Helen Ochej||3/4/13 12:38 PM|
Thanks for trying to help, but I don't have a case for it.
|Re: Nexus 7 battery drain after 4.2 udpate||mrsi||3/4/13 3:24 PM|
Ok so here is what I have found... a possible work around?
My Nexus 7 suddenly started running out of juice after about 26 hours on standby, compared to about 72 hours before. This started happening on the first update to 4.2 and it is still happening now.
I have tried:
Disabling google Now
Disabling all location history, sync etc options in google maps.
Doing a full factory reset.
Clearing caches (from boot menu and apps)
None of the above made any difference. If you select the battery app it was "google services" consuming all the battery on 4.2 then "google play services" using all the battery on 4.2.1-4.2.2.
If you go to settings -> apps -> swipe to show ALL -> then select "google play services", You can hit DISABLE. This asked me whether I wanted to uninstall the updates to this app... I said yes.
Viola. My Nexus 7 now lasts 72 hours again on standby, and I haven't noticed anything not working (I have been able to install apps from play without a problem). I haven't tried this for long enough to be sure there aren't any serious side effects, I'd like to know if anyone can find any?
|Re: Nexus 7 battery drain after 4.2 udpate||nrsantos||3/4/13 3:50 PM|
Anyone have problems with Google Drive?
I have Nexus Phone and Nexus 7 and Battery gets crazy when I install this app. I don't know if are any problem with my account because other people with the same phone/app doesn't have this problem.
Solution: remove google drive!
|Re: Nexus 7 battery drain after 4.2 udpate||JoelLuth||3/5/13 9:03 AM|
No problems for me with Drive (yet). I made sure it was installed on my N7 and accessed my Drive (since I wasn't sure I had ever done that on this device). After sitting overnight the battery was at 97%.
|Nexus 7 battery drain after 4.2 udpate||alex mills||3/6/13 3:43 AM|
Do not be fooled Some peoples tablets appear to be getting better,mine Did too until I woke up this morning to it being completely dead and not taking charge. Complete battery failure.
|Re: Nexus 7 battery drain after 4.2 udpate||JoelLuth||3/6/13 11:02 AM|
For those of you seeing high Google Maps and/or Services usage in battery stats, you may want to try an alternative location reporting app. I recently turned Google Now back on on my GNexus and while my battery usage wasn't horrible, I did see Maps shoot up to 75% (on standby). I installed backitude (there are others) and after some configuring Maps dropped considerably (10-20% or so, I don't recall exactly). I haven't done this on my N7 yet as I'm still trying to diag the wakelock problems and don't want to muddy the waters.
I have just started playing with this and of course YMMV, but it might be something to try. Google's Location service just doesn't seem to be configurable enough to provide reasonable battery usage.
|Re: Nexus 7 battery drain after 4.2 udpate||bobsscgirl||3/7/13 2:37 PM|
Ok here is the latest update from the land of Dorothy and Toto. I ran down a few things that appeared to be battery guzzlers on my tablet. Long and the short of it showed little long term benefit. Battery Widget Reborn seems to thoroughly assess the usage and even better it seems to fix it for the most part
|Re: Nexus 7 battery drain after 4.2 udpate||D. Madden||3/13/13 9:29 AM|
I have a rooted, T*Mobile 3G (no SIM/not activated), 32GB Nexus 7 tablet running 4.2.2. I've only had it for a week or two, and never had a problem with battery life until yesterday. It was mostly charged and sat unused on my desk at the office all day. When I tried to use it that evening, it had shut down and the battery was completely flat. I got it booted again and took the attached screenshot showing battery charge state over time. Note the sharp decline at the end: I believe that happened while the tablet was idle/asleep.
|Re: Nexus 7 battery drain after 4.2 udpate||android newbie||3/14/13 10:02 PM|
Nexus 7 3G 4.2.2
I'm having the same problem as everyone else. Battery drains quickly whether in use or in sleep mode. I've searched and searched for solutions, but there seems to be none. Tried factory re-set countless times, tried rooting, tried installing no apps, tried all sorts of charging methods...problem persists. I love my device, but this is a HUGE problem that needs to be addressed.
|Re: Nexus 7 battery drain after 4.2 udpate||D. Madden||3/15/13 7:33 AM|
I called Play because that's all the "official" support I could find on the web. The agent asked for a synopsis of the problem and then RMA'd the device. No troubleshooting, no "did you do a factory re-set," nothing else.
I think it's a software issue -- why else would it work fine for a few weeks, then start all of a sudden? -- but maybe they know of a hardware problem, or maybe they're just trying to stall for time.
Anyway, I removed some apps yesterday and took battery-state screenshots before an overnight sleep, and the charge held last night. If the charge holds all day today and tonight, I'll probably reinstall the apps and see if I can narrow it down that way.
|Re: Nexus 7 battery drain after 4.2 udpate||JoelLuth||3/15/13 8:13 AM|
I agree, it smells like a software problem to me. My 3G N7 hasn't been doing it for a couple weeks, but I'm still trying to pin down the problem. Until I can toggle the behavior on and off by changing a specific setting I won't be comfortable.I haven't found that setting yet (if it exists).
|Re: Nexus 7 battery drain after 4.2 udpate||GOING GALT||3/21/13 3:13 AM|
I, too, have an unrooted Nexus 7. Worked beautifully - great battery life...until the update. I was getting so frustrated with it b/c every time I picked the thing up to use it (which was seldom), about 30% more of the battery had drained while it was supposedly asleep. It ended up being on the charger more than it was in my hands.
I read numerous posts about doing a factory reset, but I resisted doing that for the longest time, simply b/c I didn't want to take the time, and, I didn't think it would make that big of a difference. After several more weeks of dealing with this extreme battery drain, I finally figured that I HAD to do SOMETHING. My Nexus was pretty much useless as it was.
I am happy to report that after the factory reset, it is as if I have my brand new, fresh out of the box Nexus back! I wish I had done the reset sooner. It really wasn't as much trouble as I thought it would be. Since all of my apps were saved in Google Play, it wasn't hard to load them back onto my device. Before resetting, I just took a little time to save all of my screenshots, videos, etc.
If you are struggling with battery issues, do the reset. For me, it was definitely worth it!!
|Re: Nexus 7 battery drain after 4.2 udpate||JoelLuth||3/21/13 8:59 AM|
I'm glad the reset helped you, I just hope it sticks. I did a factory reset a while ago and it did appear to fix the problem, unfortunately the problem resurfaced a few days later. I've had as much success with a simple reboot as I did with the factory reset. So for me, the factory reset was *not* a solution. YMMV.
|Re: Nexus 7 battery drain after 4.2 udpate||Uniquenn||3/21/13 11:48 AM|
I have updated virtually every apps and the OS to the latest version available and my power drain problems have completely disappeared. It's like a miracle from the new Pope or something.
|Re: Nexus 7 battery drain after 4.2 udpate||jdebose||3/28/13 6:38 PM|
I got mine in December, I've had the 4.2 update since then. I've usually gone 2+ days without needing a charge, but since last week, it dies during an 8 hour shift at work, while it's in standby and with airplane mode on. Even right now, I was at 2%, on the charger, and it dropped to 1%. I haven't changed anything. I haven't even downloaded any new apps!
Beautiful widget says it has a Keep Awake time of 3+ hours during the 10 hour period of being unplugged. Does that mean it's causing the problem?
|Re: Nexus 7 battery drain after 4.2 udpate||D. Madden||3/28/13 10:37 PM|
I got my RMA'd unit a week or so ago. Battery life is fine, and I've re-installed most of my old apps (even the ones I thought might be causing problems). HOWEVER, I haven't installed the system update that's been downloaded. I'm still at 4.2 (I think the update is to 4.2.2). I don't know whether there's anything critical in the update, but I'm probably going to put off installing it for a while longer.
|Re: Nexus 7 battery drain after 4.2 udpate||Pudzo||4/6/13 3:35 AM|
Please listen closely . There is a app DS Battery Saver Pro.
It will give you 30 to 40% more battery life. I doubted it would work but I was desperate. It works well Once you read the explanation why it works, it will make sense. It is on Google Play
|Re: Nexus 7 battery drain after 4.2 udpate||Pudzo||4/6/13 3:38 AM|
|Re: Nexus 7 battery drain after 4.2 udpate||Pudzo||4/6/13 3:39 AM|
|Re: Nexus 7 battery drain after 4.2 udpate||Pudzo||4/6/13 3:39 AM|
|Re: Nexus 7 battery drain after 4.2 udpate||pipcollector||4/12/13 4:00 AM|
thank you Pudzo
I installed Deep Sleep Battery Saver free version and use Slumberer profile. It works so far so good
Before upgrade to 4.2.2 my battery usage is: screen 70%, OS 15%
After upgrade to 4.2.2 the usage is: screen 40%, OS 40%+
After using DS Battery Saver the usage is: screen 70%, idle 15%, OS 2%
|Re: Nexus 7 battery drain after 4.2 udpate||android newbie||4/20/13 7:59 PM|
I downloaded the Deep Sleep Battery Saver, but it didn't help at all. Not only does my battery drain incredibly fast during Sleep, but during regular use as well.
Can't wait for there to be a solution to this problem.
|Re: Nexus 7 battery drain after 4.2 udpate||Oscar Ferrari||5/3/13 7:01 AM|
My battery goes a down by one percent every 1-2 minutes D: I really hope Google can fix this.. This was what I used my b-day money on too :(..
|Nexus 7 battery drain after 4.2 udpate||scott pitman||5/7/13 10:10 PM|
Just install the free version of Ds Battery Saver and it will force a deep sleep when screen is off. Standard settings are fine.
|Nexus 7 battery drain after 4.2 udpate||scott pitman||5/7/13 10:10 PM|
|Nexus 7 battery drain after 4.2 udpate||scott pitman||5/7/13 10:10 PM|
|Nexus 7 battery drain after 4.2 udpate||scott pitman||5/7/13 10:10 PM|
|Re: Nexus 7 battery drain after 4.2 udpate||ANDREZSTAR||5/11/13 9:07 AM|
I have a nexus 4 and i cannot find that GOOGLE PLAY SERVICE you are talking about
Did anyone find a solution for this battery drain?
|Re: Nexus 7 battery drain after 4.2 udpate||ANDREZSTAR||5/13/13 12:55 AM|
Ive read this at the google support page (https://support.google.com/nexus/4/answer/2852139?hl=es )
If you’re experiencing issues - such as apps crashing, reboots, or fast battery drain - on your device, they could be caused by a third-party app. To check if this is the case, you can start up your device in safe mode, which temporarily disables third-party apps that you’ve installed.
Press the Power button on your device.
Touch & hold the Power off option in the dialog box.
Touch OK in the following dialog to start safe mode.
Try using your device in safe mode to see if the problem persists. If it doesn’t, restart your device to get it out of safe mode and uninstall recently installed apps to see if you can pinpoint the one that’s causing the problem.
Apr 11, 2013
Ive tried it and the battery doesnt drain that quick anymore...
The thing is that I have no idea which 3rd app can be affecting my battery that bad
Did anyone find a REAL solution?
|Re: Nexus 7 battery drain after 4.2 udpate||Lengi123||5/14/13 1:28 PM|
My screen said 98%... Is that bad?
|Re: Nexus 7 battery drain after 4.2 udpate||Richard Desrosier||5/14/13 1:53 PM|
It sounds like you have magnets in your cover. This will keep your screen on and kill your battery. If you have a cover remove it and let it sit over night and check again. I ended up removing the magnets in my cover and adding DS battery saver and mine will sit for a week and still have plenty of juice when I need it. I hope this works for you everyone seems to be different.
|Re: Nexus 7 battery drain after 4.2 udpate||ANDREZSTAR||5/14/13 11:20 PM|
thats just nonsense. Had a cover from the begining and the battery was working just fine.
Then all of a sudden it started draining so quick.
Tried to uninstall almost all the apps I have and it works a bit better. Being idle can stand for around 8/9 hours.
Still not good enough. Im thinking about a RMA
|Re: Nexus 7 battery drain after 4.2 udpate||silversword||6/1/13 6:41 AM|
For me on a native Nexus 7, it was the (google) Currents app (which you can't uninstall you can only disable). Before: 40% battery in 12 hrs with 60% of battery usage going to mediaserver. After disabling Currents, I've had 13% battery usage after 19hrs. Big difference!
|Re: Nexus 7 battery drain after 4.2 udpate||winston Oko||6/1/13 12:57 PM|
Trust me you do NOT want an iPad mini that thing is just a piece of crap. I used it before buying a nexus 7.
|Re: Nexus 7 battery drain after 4.2 udpate||Xython||7/3/13 1:53 AM|
I am having the same issue.
* Bring Device into the office, plug it in to a AC -> USB adapter. This is not a Google adapter, but the error occurs when running on DC, or when using the official Google adapter...
* The screen stays on, on the lock screen, with square boxes appearing and disappearing rapidly on the left and ride side of the clock. I had originally thought this showed some form of touchscreen junk data as a result of a loose ribbon cable or something.
* The device gets EXTREMELY HOT, especially right behind where the 3G chip is. Not quite melting plastic hot, but very close. I could imagine if I had also left it in the car or in the sun I would be ranting about the device melting or worse.
The device battery screen shows it has been charging for the past 3 hours, but the battery still dropped, extremely fast. It easily used up 2/3rd the battery in the 3 hours or so that I had it plugged with this problem.
Battery usage was almost all "Screen." The screen apparently was on the entire time. I am unsure if I pushed the button to lock / disable the screen, or if I had just assumed it would handle that for me. I presume at least at one point the screen turned off briefly, as the lock screen was up.
Both Play Music and Play Store were open in the background.
I'll try disabling the Play Services, or perhaps doing a factory reset, next.
|Re: Nexus 7 battery drain after 4.2 udpate||kwarior||7/5/13 7:09 AM|
Since upgrading to 4.2.2, The battery life is terrible. When Off/standby it goes from 100% to 0% in about 2 days. So 2 days when completely idle. Looking at the battery use, it shows "Android" as consuming 60% of the battery when switched off. Found an article saying we have to disable google currents (which I have never heard of and never use). however, in settings->apps when you hit the disable, button, it only gives the option to "reset to factory version" or similar, no way to disable it. So I tried simply force closing it each time I use the device, but this didn't seem to help.
I also notice the tablet is very very laggy. Performance is worse than my Samsung Galaxy III mini, which has half the power. E.g. swiping, starting apps etc. I end up doing everything two or three times because the UI is so unresponsive. Worst is the unlock and screen rotation. I end up plaing ulock tag as there is so much delay.
I have only installed a few games and skype. I setup gmail, but dont use ANY google features (dont use maps or google+ for example).
|Re: Nexus 7 battery drain after 4.2 udpate||Chip Estrada||7/5/13 10:25 AM|
You guys need to stop surfing porn on your tablets, you are having your devices killed by 3rd party apps running in the background hidden from the OS. This is easily done and easily repaired if you do a factory reset on your devices. Naughty kids! :P
|Re: Nexus 7 battery drain after 4.2 udpate||KiTA .||7/6/13 10:01 PM|
Thanks for the feedback. If you had actually ready any of the posts in the thread you would have discovered that this doesn't actually fix the problem. People have factory reset without the battery life being fixed. The current suspect is Google Play's background service having a CPU or Memory Leak.
|Re: Nexus 7 battery drain after 4.2 udpate||Festrada007||7/6/13 10:54 PM|
I did read the posts, we have 3 Nexus 7's in my family. 2 are stock 4.2.2,and mine has Franco kernel with Smooth rom and all three are performing excellently. They all are 16Gb models. Mine is rooted and is from the preorder batch from over a year ago. My 5y/o daughters is stock and perchased in October of 2012. And my 8 y/o daughter's was perchased in December of 2012. The kid load all kind of crap and i have never had to reset theirs. Mine has been tinkered with because I am a computer engineer and kant help myself. I have no complaints an think it is the finest tablet out there. I want to buy my wife one but she loves her Kindle Fire. I did by my best friend one for his Birthday though and the only feedback was his wife complaining that her tablet is not as fast. So im not sure what you guys are doing to your Nexus, but i am pretty sure it is user error. REPLACE USER, HIT ANY KEY.
|Re: Nexus 7 battery drain after 4.2 udpate||KiTA .||7/6/13 11:08 PM|
Mine is a 32GB 3G model. I highly suspect that it's something to do with the lock screen. I use the one where you have to put in a code to access the device, and each time I've noticed the device become unbearably hot and have the battery life plummet, I've noticed when I pick it up the lock screen is still up, only on the left or right (as if I was trying to scroll the Widget segment of the screen). Other suspect that it's a Google Play background app, or possibly widget, causing the problem -- could be, since that widget screen has a Google Play thing appear on it if you have music playing / paused.
|Nexus 7 battery drain after 4.2 udpate||mhyon||7/7/13 10:07 PM|
Downgraded to 4.1.2 and battery life seems to have improved significantly on mine.
|Re: Nexus 7 battery drain after 4.2 udpate||mat watson||7/25/13 4:57 PM|
Sorry to hear that ds battery didn't work for you, but fwiw it did for me. My gf and I have had horrendous problems. Dead in 9 hours. Mine is 2nd warranty replacement. But the ds app solved it for both of us. Using CPU spy I can see that prior to ds they were never getting deep sleep. With it they deep sleep 90%. Give it another try and use slumberer mode
|Re: Nexus 7 battery drain after 4.2 udpate||kwarior||7/26/13 1:27 AM|
@Silversword, how do you disable google currents? When I got into apps and try and disable it, it only gives me the option to reset to factory default.
|Re: Nexus 7 battery drain after 4.2 udpate||Scott Boren||8/8/13 11:39 AM|
I am running 4.3 and I have the battery drain issue but it is the OS using 45% of the power. Just did a reset (power + Up Volume). Any other ideas?
|Re: Nexus 7 battery drain after 4.2 udpate||Uniquenn||8/8/13 11:49 AM|
I've had good luck with DS Battery Saver and I had too remove twitter cause it was sucking juice like crazy all the time.
|Re: Nexus 7 battery drain after 4.2 udpate||kwarior||8/8/13 2:28 PM|
How did you remove twitter? I have never used twitter, so I dont expect this is the culprit, but would like to remove it anyway just in case.
I have to shut down mine after every use, and boot it up again, as otherwise the battery would be dead in a day. The kick in the testicles is that it takes 2 minutes and 10s to boot (stupidly, i encrypted it). Do you realize how long 2 minutes is waiting every time you want to use it? The ipone boots in about 10s.
The tablet is laggy as hell also. If I hit a text entry box (e.g. browser address bar, or password entry), I have to wait about 5s before the keypad pops up. My ancient Android 2.3 phone with a single 800MHz processor is way more responsive in UI.
this is all since upgrading the OS. It was fine before this.
Assuming google are not going to find a solutin, we need a SW or fix which will put the device into fill hibernate - I.E write memory to Flash, then shutdown, so that we can later reboot it without waiting 2mins.
|Re: Nexus 7 battery drain after 4.2 udpate||Uniquenn||8/8/13 3:17 PM|
One way to remove twitter is to go to the google play store and click on twitter and it should say open or uninstall since you already have it install. Another way to uninstall is to go to setting apps and find it and there should be an uninstall button there I believe.
If you are not using twitter I would recommend uninstalling it cause it is doing a bunch of crap even when you don't have it on the screen!!!!!! Also, make sure you update all your apps to the latest version because doing that helped my system a lot.
(Ignore the following: I know you guys are watching my computer but you are screwing my work up. Please back off!!!!!!!)
|Re: Nexus 7 battery drain after 4.2 udpate||ReneaB||8/8/13 6:08 PM|
I have installed DS Battery Saver about 2 1/2 weeks ago. Wanted to test it for a few weeks before posting a reply. Happy to report it is working great for me! I now get 5+ days battery life consistently before I have to recharge it. I have it set so that when the screen is off, it completely goes to sleep and doesn't wake up until the screen is turned back on. It's working great for me.
|Re: Nexus 7 battery drain after 4.2 udpate||Scott Boren||8/8/13 6:52 PM|
Where do I find DS Battery Saver? Have searched the app store with no luck. Anyone?
|Re: Nexus 7 battery drain after 4.2 udpate||ReneaB||8/8/13 7:04 PM|
It's in the google play store:
|Re: Nexus 7 battery drain after 4.2 udpate||android newbie||8/8/13 7:26 PM|
I've done numerous factory resets, but the battery drain issue persists.
I've waited to install any apps following the factory reset, but the battery drain issue persists.
I've disabled Currents, NFC, and all sorts of other programs/apps, but the battery drain issue persists.
I've installed Battery DS (and other battery apps), but the battery drain issue persists (whether or not the unit is asleep or being used)
I've rooted, but the battery drain issue persists.I've updated to 4.3 but the battery drain issue persists.
|Re: Nexus 7 battery drain after 4.2 udpate||mhyon||8/9/13 9:16 AM|
I had the same battery drain problem on 4.2 and tried everything.
I finally decided to downgrade to 4.1.2 and now my Nexus goes several days on a charge.
Steps to downgrade - http://forum.xda-developers.com/showthread.php?t=1907796