I have just bought a 4s from a friend. I reset the phone for a fresh start and, while going through the setup process, the phone doesn't recognise the sim. The original owner is going to get an unlock code from the old carrier (3) but without a 3 sim to put into the phone, how can I get through the setup process and unlock it?
I don't have access to my friend's old sim BTW.
См. статью: How to unlock an iphone 4s which has been reset?