Xiaomi Mix 4 official Pictures. Xiaomi Mix 4 is a Smartphone of xiaomi. The Xiaomi Mix 4 Android Smartphone. Announced Aug 2021. Features 6.67″ Display, Snapdragon 888+ 5G Chipset, 4500 MAh Battery, 512 GB Storage, 12 GB RAM, Corning Gorilla Glass Victus. Xiaomi Mix 4 price starts.