I am using iOS 7 on both my iPhone 4S and 5 and I want to unlock them from AT&T and sign up for Tmobile service. Does anyone know how to unlock them? I don't mind paying a few dollars to unlock them but there are so many people out there claiming to be able to unlock your phone, I don't know who to trust or how much it should cost.Do I even need tounlock my phone at all or can I just take a Tmobile sim and place it in my AT&T iPhone and it should work? Please help. Thanks!
См. статью: Do I need to unlock my AT&T iPhone 5 in order to use it with Tmobile?