... 900/1800/1900MHz 3G: WCDMA 850/2100MHzSim CardDual SIM Card Dual StandbyService ProvideUnlockedStyleBarColorWhite,Dark BlueShell MaterialPlastic SystemOSAndroid 4. ... Calibrate screen, Keyboard, Wifi, WLAN, Camera, all Card Slot and USB Slot, G-Sensor, Bluetooth, Microphone, SpeakerWe shall ... function at this moment)Accessory Test: Battery, USB Cable, Earphone, ChargerWarranty:We provide 1 year warranty ...