I'm failing to find anything useful from googling Purchased an unlocked tmobile iphone 5 from swappa Upon a full restore in itunes with my AT&T gophone Sim in, I receive "congratulations your iphone has been unlocked" popup in itunes like normal. Then a few days later, the phone gets an "activation required" popup, I sign into wifi and activates and all is well. Why is this happening?! It also happened previously, multiple times, when I had restored from a backup from a verizon iphone 4s. So this happens when restoring from backup and as new, fresh :-/ Is my SIM bad? I've never really heard of that.