This phone will only work with 2G: GSM 850\/900\/1800\/1900MHz 3G: WCDMA 850\/900\/1900\/2100MHz; TD-SCDMA B34\/B39 4G: FDD-LTE B1\/3\/7、 TDD-LTE B38\/39\/40\/41 It's unlocked for worldwide use、 customers please take a check to see if your local area network or the communication operator you are using is compatible with this phone before purchase. You can also go to this topic [===Official Help Center=== How To Check If This Phone Can Be Used In Your Country] to find how to confirm this.Description:            Basic Information           Model       Xiaomi Mi4s           Band       2G: GSM 850\/900\/1800\/1900MHz           CDMA 1X BC0\/BC1    3G: WCDMA 850\/900\/1900\/2100MHz           TD-SCDMA B34\/39           CDMA 2000 bands BC0 \/ BC1    4G: FDD-LTE B1\/3\/7           TDD-LTE B38\/39\/40\/41           Sim Card       Dual SIM Card Dual Standby or Single SIM card + Micro SD Card (nano SIM、 micro SIM)           Style       Bar           Color       White、 Black、 Gold、 Purple           Shell Material       Front & Rear glass body and full side metal body                       System           OS       MIUI V7           CPU       Qualcomm Snapdragon 808 64Bit Hexa Core           GPU       Adreno 418            ROM       16GB eMMC 5.0           RAM       2GB LPDDR3            Card Extend       Support TF card up to 128GB                       Screen           Display Size       5 Inch           Type       IPS Capacitive Touch Screen、 95% NTSC color gamut 、441PPI           Resolution       1920 x 1080 pixels                        Support Format           Audio File Format        PCM、 AAC\/AAC+\/eAAC+、 MP3、 AMR – NB and WB、 FLAC、 APE、 DSD、 WAV           Video File Format        MP4、 M4V、 MKV、 XVID、 ASF、 WAV、 AAC、H.265 \/HEVC(Main profile)、 H.264 (Baseline\/Main\/High profile)、 MPEG4 (Simple profile\/ASP)、 VC-1(Simple\/Main\/Advanced profile)、 etc           Image File Format       JPEG\/PNG\/GIF\/BMP           E-book Format       TXT\/CHM\/DOC\/HTML           Earphone Port       3.5mm                       Data Transfer & Connectivity           Data Transfer       USB\/Bluetooth           Mobile Internet       WAP\/WiFi                       General           Camera\/Picture     Resolution       Back camera: 13 Megapixel     5-element lens、 f\/2.0 aperture    Two-tone flash    Supports PDAF     Supports 1080p video recordings    120fps Slow Motion video recordings    Front Camera: 5 Megapixel     85  wide angle lens、 ƒ\/2.0 aperture    Supports 1080p video recordings           Language       English、 Chinese           Message       SMS\/MMS           Input       Handwrite\/Keypad           GPS       Yes、 Supports GPS、 A-GPS、 GLONASS、 Beidou           WIFI       Supports Wi-Fi (2.4G\/5G)、  802.11 a\/b\/g\/n\/ac、 WiFi display、