Orginal Oneplus X 4G Smartphone Android 5.1 3GB RAM+16GB ROM with 5.0" Dual Sim International Version (black) Android 4.4 MTK6572 Octa Core 1.7GHZ 3GB RAM 16GB ROM Double cameras, front 8.0 MP back 13.0 MP 5.0 Inch Screen 1280 x 720 pixels Does not work on Verizon, Sprint, Boost etc. CDMA carriers