2 Ways to factory unlock your AT&T iPhone
Locate your IMEI number
Call AT&T or go to there chat support:
Contact Number: 1-800-331-0500
Chat Support: Click Here
Just ask the AT&T Representative that you need to unlock your iphone .
You must give the representative your IMEI number.
your device can’t be associated with a current and active commitment on AT&T, and you must have fulfilled your contract term upgrading under one of their upgrade policies or paid an ETF (Early Termination Fee).
The Representative should tell you everything else you need.
Once your done you should receive an unlock code and direction on how to do it through email or phone call which ever one you wanted them to contact you by.
I Have been Refused unlocking by AT&T. Can i Still Unlock Somehow ?
If you possess a ATT iPhone and you purchased the iPhone without the contract and have tried to call ATT and been refused the unlock you have another option. The Rebel Simcard Team have a USA AT&T Unlock service that can still unlock your iPhone forever.
USA AT&T iPhone Full Factory Unlocking (Official Permanent iTunes Factory Unlock)
CODE: USA AT&T Factory Unlock
This is the only FULL LIFE TIME UNLOCK solution for Apple iPhone as the IMEI is registered as UNLOCKED in Apple database.