SVP&reg; Unlocked 4" Android,Dual SIM, Quad-Band GSM, Wifi, Touch Screen Smart Phone -SD401 Unlocked, quad-band GSM 850/900/1800/1900 MHz Operating System: Android 2.3.6 SIM card: Dual SIM , Dual Standby Dual Camera: Front 0.3MP / Rear 2.0MP Talk time: 300 minutes ; Standby time: 600 hours