4.5" Unlocked Anroid 5.1 Cell Phones Quad Core ROM 4GB Dual Camera Dual SIM GSM/3G Quadband Smartphones WIFI Bluetooth Dual Standby Black Unlocked Dual SIM Cell phones, Android 5.1 Lollipop 4.5" FWVGA(480 x 854) Screen CUP:MTK6580 Quad Core 1.3GHz;GPU:Mali-400MP;RAM&ROM: 512MB + 4GB Dual Cameras, front camera 0.3MP, back camera 2.0MP 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.