The Xiaomi Black Shark 4S Pro is a 2021 Android 11, Joy UI 12.8 smartphone powered by the Qualcomm SM8350 Snapdragon 888+ 5G (5 nm) with 12GB | 16GB | 8GB and 256GB | 512GB internal storage. It features a 6.7", Super AMOLED, 144Hz, HDR10+, 1300 nits (peak), 1080.0x2400.0 display and is available in Black, White.

The Black Shark 4S Pro is equipped with a Li-Po 4500 mAh, a 64 MP, 4K@30/60fps, 1080p@30/60/240fps, 1080p@960fps; HDR10+ main camera, a 20 MP, 1080p@30fps front camera. The device uses a Nano-SIM + Nano-SIM configuration. It weighs 220 g.

A bootloop on the Xiaomi Black Shark 4S Pro 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.