Xiaomi Mi 4S has expect release 2016, march.xiaomi mi 4s has light weight 133g, 7.8mm thickness.operating system is android os.2G, 3G, and 4G supported in this mobile phone.sim type micro-sim dual stand by.rear camera is 13MP with LED flash and secondary camera is 5MP f/2.0, 1080.They comes in latest technology sensors, Fingerprint, accelerometer, gyro, proximity and compass.xiaomi mi 4s is supported to fast charging 40% charge in 60min quick charger 2.0.the mobile battery is non removable battery.style and design look like a great.value of money is good.features this price range is pretty cool.easy to use this mobile phone.