I paid full price for an AT&T 16gb black iPhone last Monday at a local Apple Store with the intention of unlocking it for use on T-Mobile. For those who don't know if you pay full price for an AT&T iPhone 5, it will unlock when you restore it in iTunes. Everything went OK until I decided to download 6.0.1 a few days ago. I then got the lost wifi bug and battery life isn't as good. I have an appointment at the genius bar tonight and it looks like I am going to get a replacement phone. Question is, since I paid full price for my 5, will I have any problems with the replacement as far as not being able to unlock it? I wouldn't think so with the phone not being tied to an AT&T contract, but I'm not 100 percent sure about it.