Now there are several options to unlock your At&t iphone. If you have a At&t account that is in good standing you can get your iphone unlocked for free from At&t if you qualify for their requirements. They can be a pain so a lot of people prefer to use a third party unlock service. When using third party unlock service make sure it is a factory unlock. Some sites try to sell jailbreak software as a unlock---Beware jailbreak software is free do not pay for it!!!! For a reliable Official factory iphone unlock the best I have found is www.iphoneasyunlock.com They unlock all At&t models and at very competitive pricing. And their service is fast .