The Xiaomi Mix 4 was announced in 2021, August 10 With 6.67 inches, 107.4 cm2 (~87.6% screen-to-body ratio) AMOLED, 1B colors, 120Hz, HDR10+, Dolby Vision, 800 nits (HBM), Powered by Qualcomm SM8350 Snapdragon 888+ 5G (5 nm) and running Android 11, MIUI 12.5, the device delivered smooth performance and multitasking capabilities. while the Li-Po 4500 mAh, non-removable ensured long-lasting usage.