Found this online. This would be great for people who would want to use their iPhone with T-Mobile or they travel outside the country.
For those of you who are AT&T users and have wanted to unlock your iPhone, you might be in luck. The wireless carrier has been reported to hand out free factory unlocks to customers with on-contract iPhones. Requesting an unlock through AT&T’s web form seems to have produced good results for a number of iPhone owners. The folks over at Ars Technica have heard the following from AT&T customers (Ars posterlunarobverse) who received free clean factory unlocks while on contract:
I got this even though I’m 10 months into my 2 year contract. When I upgrade to the iPhone 5 next week, I’ll still have to pay the ETF but it’ll make selling my old iPhone (or handing it down to an iPhone-less friend) much easier.
After other users reported trying to call in and getting their iPhone 4S unlocked, many said customer representatives told them the service could not be offered until after they had paid the subsidy. This leads to the conclusion that potential unlockers will have better luck getting through to AT&T by using their web form instead. According to AT&T’s Seth Bloom:
The only requirements are that a customer’s account must be in good standing, their device cannot be associated with a current and active term commitment on an AT&T customer account, and they need to have fulfilled their contract term, upgraded under one of our upgrade policies or paid an early termination fee.
If your application to receive an unlock is granted by AT&T, you’ll be sent a confirmation number requesting you to restore your iPhone in iTunes. While the device is being restored, you’ll see a message that your iPhone has successfully been unlocked on AT&T’s end. Aside from getting an unlock under the table, it’s usually quite difficult to make a carrier unlock your iPhone before the contract expires so this news might come in handy to many. At the very least, you can try to get your iPhone unlocked to sell it for more before the next-gen iPhone is announced on September 12th. See if the method works for you and report back to us with your results.
Source: Ars Technica