Apple has begun selling unlocked GSM iPhone 5 models in the United States, some two months after it originally went on sale. This is similar to the delay that preceded sales of the unlocked iPhone 4S last year. The launch follows the drop of the iPhone 5's estimated shipping times to one week just a few days ago. The unlocked GSM models are available for $649/$749/$849 for the 16/32/64 GB models and also have an estimated ship time of one week. In the U.S., the unlocked models will work on both AT&T and T-Mobile. Article Link: Apple Now Selling Unlocked GSM iPhones in the U.S.