AT&T, which just recently began unlocking iPhones for off-contract customers, is also unlocking iPhones for U.S. service members. MacRumors reports that the company is unlocking the handsets even if the member is still under contract with the carrier. According to the report, carriers are required to suspend service without penalty for deployed members of the military, but does required to unlock their handsets; it appears the company is choosing to do so on its own. By unlocking the iPhones, AT&T is allowing those military personnel to insert SIM cards from local carriers while overseas, helping them to avoid costly international service charges. The report suggests that deployed service members should contact AT&T customer service to get more information.