I just came back from the Apple store after returning 2 iPhone 5's that were scratched. The first one I brought home, unlocked successfully after a restore, I tried it with my t-mobile nano sim. But this third one I am restoring won't unlock, the "your iphone has been unlocked congradulations!" message doesnt appear, and when I put in my t-mo nano sim in, it says activation required, also after restoring, the message on itunes says that "the sim card is not supported" rather than the expected "congradualations! your phone has been unlocked" message. Anyone have experience with this? How would I go about unlocking it now? Thanks.