Tech Xiaomi Mi Mix 4 Specifications Leaked, Will Have 100W Fast Charging, UFS 3.1 Storage Omair Iqbal May 16, 2019 Xiaomi Mi Mix 4 specs leaked: The phone will have 100W fast charging, UFS 3.1 storage, Qualcomm Snapdragon 855 processor, 4500 mAh battery and 2K AMOLED display.