Hey, So I just bought my iPad 3G from a guy on craigslist. I got home, wiped and reset it, and synced it to my Mac. Once the iPad started up I saw I had a 3G signal. I do not have wifi at home, and I was connected to AT&Ts 3G network. I didn't set it up yet! When I went to cellular data connect there is only an email and password screen, and none of my emails worked. There was no choice to start a new plan, nothing other than email/password. Did I stumble into some free 3G? The guy said no one activated it. I am afraid to call AT&T and ruin a freebie. Nothing else really seemed stolen about it, but could this guy have stolen it from someone who did pay for the data? If so then what? Sorry for the confusion. Don't want to ruin a good thing, but most good stuff isn't free. Any and all help please.