There's been hints of it coming as early as February, but we now have a smoking gun at the FCC: the Galaxy S III is coming to T-Mobile. A Samsung SGH-T999 has popped up at the agency sporting newly added 1,700MHz AWS support that's the telltale sign of a T-Mobile device, along with the T999 name itself (the T989 is the network's Galaxy S II). It also totes 850MHz and 1,900MHz WCDMA bands used for HSPA
