First of all, sorry for posting this here but I know there a lot of Android folks here. my friend recently changed to at&t and bought a GSII. In less than a week of usage she received a txt from AT&T stating that she passed the 2gb limit of her data plan. She says she's sure that the only thing that she used was the Facebook app and received and send a couple of emails. No streaming, no tethering, not even the browser has been used. AT&T claims the whole 2GB of data where used and 4 days. Question is, is there anything that could've been running on background without her knowing and use that much data? Thanks for any help that you guys can bring me and again sorry for posting this on a iPhone forum.