Sony Xperia sola MT27i-RED Unlocked Phone with 5 MP Camera, Android 2.3 OS, 1 GHz Dual-Core Processor, and 3.7-Inch Touchscreen--U.S. Warranty (Red) It has 3.7-Inch Reality Display Powered by 1GHz Dual Core Processor. It runs on Android 2.3 (Gingerbread) , upgrade to Android 4.0 during summer 2012.