Orginal Oneplus X 4G Smartphone Android 5.1 Quad Core 2.3GHz 3GB RAM+16GB ROM with 5.0 inch Screen Dual Sim Card - US Version (White with Gold) 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