MIUI 12.5 released for Xiaomi, Redmi phones: All the new features and upgrades Xiaomi claims MIUI 12.5 is lighter, faster, and more efficient than MIUI versions before it. Sushant Talwar | December 29, 2020 | Updated 17:00 IST Highlights MIUI 12.5 also brings some new features with itself. The Android 11-based skin will be initially available on select Mi, Redmi phones. Xiaomi's latest operating system, MIUI 12.5 is here. As of now, the Android 11-based operating system (OS) is available as a closed beta and only to users in the company's home country, China. The new update comes with a number of new features and also brings some security and performance upgrades.