Xiaomi Redmi 4 (4X official Pictures. Xiaomi Redmi 4 (4X is a Smartphone of xiaomi. The Xiaomi Redmi 4 (4X) Android Smartphone. Announced May 2017. Features 5.0″ Display Snapdragon 435 Chipset 13 MP Primary Camera 5 MP Front Camera 4100 MAh Battery 64 GB Storage 4 GB RAM Corning Gorilla Glass (unspecified Version). Xiaomi Redmi 4 (4X price starts.