So a few weeks ago I dropped my iPhone 4 and it shattered pretty bad. I bought a second-hand iPhone 4S off of Craigslist because I don't have an upgrade for quite some time. I had the person meet me at AT&T and had the phone checked to make sure it was not stolen at the store before changing hands. The phone worked great for over 2 weeks and then a few days ago it stopped receiving service. I did not know what was the cause, so I took it to AT&T store. The people at the store remembered me from having just been in there a few weeks earlier and were disappointed to tell me the phone had since been reported stolen and was now locked and unusable. They said despite watching me purchase the phone, once it is reported stolen - it is useless. I have contacted the young woman who sold me the phone, and she says that she did not report it stolen, but that it was under her mother's account and she would make sure that her mother did not report it (this may all be BS for all I know). Am I completely out of luck? If the legal owner of the account told AT&T that the phone was not stolen is it possible for it to be unlocked? Or is that just a waste of time anyways.