The T-Mobile Samsung Galaxy S II SGH-T989 is T-Mobile's version of the sequel to Samsung's Galaxy S smartphone. The screen is 4.5", which is larger than the international version of the phone. The Galaxy S II SGH-T989 is powered by a dual-core Snapdragon processor which has a clock speed of 1.5 GHz. It was code named Hercules while it was in development. Though it ships with Android 2.3.6, the T-Mobile Samsung Galaxy S II SGH-T989 received the Jelly Bean update, Android 4.1.2.