Girlfriend has a Iphone 4 from at&t. She needs to unlock it for tmobile and I am very familiar with jailbreaking, rooting, but this would be my first unlock. Just like jailbreaking and rooting I like to be very familiar with what I am doing and knowing all the information I can before I start. I have searched but get alot of those phony google sites. What do I need to know about unlocking and what are the steps. Also what versions can be unlocked at the moment? She is running on 5.1
Looks like her baseband is 04.12.01
Looks like her baseband is 04.12.01