Tip: Unlocked for Worldwide use. Please ensure local area network is compatible. click here for Network Frequency of your country. Please check with your carrier/provider before purchasing this item. Notice: This Android/Windows device is designed to function specifically with the current Android/Windows OS installed on it. Any alterations such as upgrades, modding with custom ROMs, rooting or flashing the Android device with other firmware will automatically void the device's warranty. DOOGEE X6 5.5inch 3G Phablet Android 5.1 MTK6580 Quad Core 1.3GHz 1GB + 8GB 8.0MP Main Camera Main Features: Display: 5.5 inch 1280 x 720 HD Screen, Gorilla Glass CPU: MTK6580 Quad Core 1.3GHz GPU: Mali-400mp System: Android 5.1 RAM + ROM: 1GB RAM + 8GB ROM，TF card up to 32GB Camera: Back camera 5.0MP (SW 8.0MP) with flashlight and auto focus + front camera 2.0MP (SW 5.0MP) Sensor: Gesture sensor, Gravity sensor, Proximity sensor, Light sensor Features: GPS, A-GPS, WiFi, FM Bluetooth: 4.0 SIM Card: Dual SIM dual standby, one is standard SIM, the other is Micro SIM Network: 2G: GSM 850/900/1800/1900MHz 3G: WCDMA 900/2100MHz Note: We preorder this procduct now so the language and other information will be confirmed when it's on sell later. Hope you can understand!