Xiaomi Redmi S2 (Redmi Y2 official Pictures. Xiaomi Redmi S2 (Redmi Y2 is a Smartphone of xiaomi. The Xiaomi Redmi S2 (Redmi Y2) Android Smartphone. Announced May 2018. Features 5.99″ Display Snapdragon 625 Chipset Dual: 12 MP (f/2.2 1.25μm PDAF) + 5 MP Primary Camera 16 MP Front Camera 3080 MAh Battery 64 GB Storage 4 GB RAM. Xiaomi Redmi S2 (Redmi Y2 price starts.