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. 5.7 inch MEIZU PRO 5 4G Phablet Android 5.1 Exynos 7420 Octa Core 2.1GHz 21.16MP + 5.0MP Camera 3GB RAM 32GB ROM HiFi Main Features: Display: 5.7 inch 1920 x 1080 2.5D FHD Screen, the Third Generation Corning Gorilla Glass CPU: Exynos 7420 Octa Core 4 x A57 2.1GHz + 4 x A53 1.5GHz GPU: Mali-T760 System: Android 5.1 (Flyme 4.5) RAM + ROM: 3GB RAM + 32GB ROM Camera: Back camera 21.16MP with f/2.2 aperture + front camera 5.0MP with f/2.0 aperture Sensor: Hall Sensor, Gravity Sensor, Infrared Sensor, Gyro Sensor, Ambient Light Sensor, E-compass Features: OTG, HiFi Bluetooth: 4.1 GPS: GPS, A-GPS, GLONASS, BDS SIM Card: Dual SIM dual standby, Dual Nano SIM Network: 2G: GSM 900/1800/1900MHz 3G: WCDMA 850/900/1900/2100MHz 4G: FDD-LTE 1800/2100/2600MHz SIM Card: Dual SIM dual standby, SIM1 is Nano SIM，SIM2 can be used in combination with a Nano-SIM card or a TF card of up to 128GB. Note: Nano SIM Card 2 and Micro SD Card can't used at the same time, beacuse they use same space of card slot.