I have an old iphone4 that I want to give to a friend that has a different carrier than I. I'm havaing difficulty understanding the instructions from Apple. Why do I need to restore my phone if I have already updated my iphone 6
I have an old iphone 4 that I want to give to a friend that has a different carrier than I. Why do I want to restore my old phone to "unlock" it. I erased all data when I updated my new phone.