T-Mob's variant of the Galaxy S III made its in-store debut on this very day, and we just had a chance to go hands-on with the flagship smartphone. The carrier brought the handset down to the Metropolitan Pavilion for Pepcom's baseball-themed shindig and we just had to get our greasy paws all over its shiny Pebble Blue shell -- and it is a serious fingerprint magnet. Aside from that, though, it's hard to take issue with such a slim and marvelously engineered device. The plasticky build quality does leave something to be desired, but it's something we've become accustomed with Samsung devices. We've also got to give it to Sammy for getting carriers, including T-Mobile, to leave well enough alone. Other than the innocuous logo on the back there are no physical differences between this version of the S III and its 4.8-inch cousins on other networks. There's no keyboard, redesigned corners or rejiggered buttons. Truth is, you'd be hard pressed to tell the difference between Big Magenta's variant and the international version.