I have an iphone 4s.  When I enter events on the calendar on my iphone, they do not appear on my Google Calendar, although the sync works perfectly the other way (when I enter them online, they appear on my iphone in the mobile version).  I have reviewed all the settings and I think everything is set up the way it should be, but clearly I am missing something.  This is frustrating so I would very much welcome any advice.  Thanks.