The Xiaomi 12S Ultra is a 2022 Android 12, MIUI 13 smartphone powered by the Qualcomm SM8475 Snapdragon 8+ Gen 1 (4 nm) with 12GB | 8GB and 256GB | 512GB internal storage. It features a 6.7", LTPO2 AMOLED, 1B colors, 120Hz, Dolby Vision, HDR10+, 1000 nits (HBM), 1500 nits (peak), 1440.0x3200.0 display and is available in Black, Dark Green.

The 12S Ultra is equipped with a Li-Po 4860 mAh, a 50 MP, 8K@24fps, 4K@30/60fps, 1080p@30/60/120/240fps, 720p@3840fps, gyro-EIS, Dolby Vision HDR 10-bit rec. (4K, 1080p) main camera, a 32 MP, 1080p@30fps front camera. The device uses a Nano-SIM + Nano-SIM configuration. It weighs 225 g.

A bootloop on the Xiaomi 12S Ultra occurs when the device repeatedly restarts without fully loading Android. This is commonly caused by a failed software update, corrupted system files, or an incompatible app. Most bootloops can be resolved without losing data by clearing the cache partition first before attempting a factory reset.

Factory reset may be needed as a last resort — erases all data.