Unlock brand new iPhone purchased outright outside ATT. Inserting ATT SIM locks the iPhone FYI.
ATT USERS BEWARE: My husband purchased for me a brand new iPhone for xmas, totally paid for. Inserting the ATT SIM card, it locks the device. I wanted to switch carriers and since yesterday, I have been dealing w/ATT agents in store who couldn't help me and now, just concluded chatting online w/their techs to FINALLY unlock a phone purchased outright elsewhere. NOT GOOD!! Many friends and family have been switching carriers recently being disappointed w/ATT plans and services and I am not impressed either.
Locking a device NOT yours is not right and the process to unlock it has taken me hours already.