AT&T has confirmed that it will begin unlocking iPhones for qualifying customers beginning Sunday, April 8. This means that, if you have purchased an AT&T-locked iPhone and you meet AT&T's (somewhat strict) requirements, you'll be able to take that phone to another GSM carrier here in the US or abroad.

Engadget was first to report the anonymous information about the new policy, but AT&T was quick to confirm once the word got out. According to AT&T, the iPhone you want to unlock can't be associated with a current active term commitment, and you must already be out of your contract terms (usually two years from purchase) or you must have paid an early termination fee. Your account must be in good standing, too—no $700 overdue phone bills for you.

Apple does sell already unlocked, contract-free iPhones that work on GSM carriers, including AT&T. But those devices cost $649 up front for the 16GB iPhone 4S, going up to $849 for the 64GB version—significantly higher than the $199 subsidized starting price when you buy from AT&T or another carrier. As such, the majority of current iPhone users in the US have carrier-locked devices, but AT&T's latest announcement will undoubtedly help to set a few of those users free with minimal pain involved. How many of you are going to try and get your devices unlocked come April 8 so you can hop over to T-Mobile?