Unlocked Smartphones TSJYING(TM) 5.0" Anroid 5.1 MTK6580 Quad Core ROM 4GB 5.0MP Camera Dual SIM Quadband GSM/3G Cellphone WIFI Bluetooth White Unlocked Dual SIM Cell phones, Android 5.1 Lollipop 5.0" QHD(540 x 960) Screen CUP:MTK6580 Quad Core 1.3GHz;GPU:Mali-400MP;RAM&ROM: 512MB+ 4GB Dual Cameras, front camera 2.0MP, back camera 5.0MP 3G (WCDMA 850/2100) 2G Quad Band (GSM 850/900/1800/1900) please buy the GSM/WCDMA SIM card. Do not buy the CDMA SIM card from them.