Description:          Basic Information            Model        Xiaomi Redmi Note 4 (2GB+16GB)            Style        Bar            Color        Silver、 Gray、 Gold            Network Band         2G: GSM 900\/1800\/1900MHz     3G: WCDMA 850\/900\/1900\/2100MHz            TD-SCDMA B34\/B39     4G: FDD-LTE B1\/B3\/B5\/B7\/B8            TDD-LTE B38\/B39\/B40\/B41: 2555-2655MHz             [===Not Sure Your Network ?===] \/ [==Will My Phone Work ?==]            Sim Card        Dual SIM Card Dual Standby     Card Slot 1 supports Micro-SIM Card    Card Slot 2 Supports Nano-SIM Card\/ Micro SD Card            Shell Material        Metal                       System            OS        MIUI V7            CPU        MTK Helio X20 64 bit Deca-core、 max to 2.1GHz            GPU        Mali T880 MP4 700MHz            ROM        16GB              RAM        2GB              Card Extend        Supports an external Micro SD card up to 128GB (VFAT)                       Screen             Display Size        5.5 Inch             Type        Capacitive Touch Screen、  2.5D、 72% NTSC color gamut、 support Sunlight Display、 Night Display            Brightness        450nit            Resolution        1080*1920 pixels             PPI        403            Multitouch        Yes                       Support Format            Ringtones Type        Polyphonic \/ MP3            Audio format        PCM、 AAC\/AAC+\/eAAC+、 MP3、 AMR-NB\/AMR-WB、 FLAC、 APE、 WAV            Video File Format        H.265 \/HEVC(Main profile)、 H.264 (Baseline\/Main\/High profile)、 MPEG4 (Simple profile\/ASP)、VC-1(Simple\/Main\/Advanced profile)            Graphical Format        JPEG\/PNG\/GIF\/BMP            Earphone Port        3.5mm                       Data Transfer & Connectivity            Data transfer        USB\/Bluetooth            Mobile internet        WAP\/WiFi                       General            Camera\/Picture     Resolution       Dual Cameras:    Front camera 5.0MP    ƒ\/2.0    Face Beauty、 Face Detection    Back camera 13.0MP     Two-tone flash    Support PDAF    5-element lens    ƒ\/2.0 aperture    Support 1080p\/720p video recording    720p Slow Motion video recording、 120fps            Language        Chinese、 English            Message        SMS\/MMS            Keyboard        QWERTY Virtual            Input        Handwrite\/Keypad            GPS        GPS+AGPS+GLONASS+BeiDou            WIFI        802.11 a\/b\/g\/n\/ac、 WIFI Display、 WiFi Direct            Bluetooth        BT4.2、 HID                       Sensor            Light Sensor        Support            Gyroscope        Support            Proximity sensor        Support            Accelerometer        Support