3.5" Unlocked Quadband 2 sim with Android 2.3 OS (Android 4.1 UI) Smart Phone Capacitive Touch Screen T-mobile Simple mobile (White) Band:GSM 850/900/1800/1900MHz ,NOT Support 3G/4G LTE NetWork Service Provide:Unlocked Shell Material:Plastic Style:Bar Sim Card :Dual SIM Card Dual Standby (One SIM Slot is for Regular SIM Card Another is for Micro SIM card ! )