LXLG&reg; Unlocked 5.0 Inch IPS Screen Android 5.1 MTK6580 Quad core Dual SIM Dual Standby RAM 512MB ROM 4GB Cellphone Mobile Phone 3G Phone Smartphone 5.0MP Camera (White) Please open back case to remove the insulating tape on battery before startup! 5.0 inch 540 x 960 Screen System: Android 5.1 MTK6580 Quad Core 1.3GHz Mali-400MP RAM&ROM: 512MB RAM + 4GB ROM Dual Cameras, front camera 2.0MP, back camera 5.0MP Additional Features: Browser, 3G, Calendar, E-book, Wi-Fi, Calculator, MP3, FM, People, MP4, Bluetooth, Sound Recorder, GPS, Alarm 3G (WCDMA 850/2100) and 2G Quad Band(GSM 850/900/1800/1900) please buy the GSM/WCDMA SIM card. Do not buy the CDMA SIM card from them.