Google Product Forums
Re: AT&T Nexus S still on 2.3.4 as of Feb. 07 2012!
Feb 23, 2012 8:00 AM
Posted in group:
Google Mobile Help Forum
Android Devices : Other Google Products :
It's underneath the battery cover. The i9020T is the same as the i9020 version. The i9020A is the AT&T version. Those two models have different radios which is why the updates are different.