Xiaomi Redmi K40S official Pictures. Xiaomi Redmi K40S is a Smartphone of xiaomi. The Xiaomi Redmi K40S Android Smartphone. Announced Mar 2022. Features 6.67″ Display, Snapdragon 870 5G Chipset, 4500 MAh Battery, 256 GB Storage, 12 GB RAM, Corning Gorilla Glass 5. Xiaomi Redmi K40S price starts.