The HTC Desire 21 Pro 5G is a 2021 Android 10 smartphone powered by the Qualcomm SM6350 Snapdragon 690 5G (8 nm) with 8GB and 128GB internal storage. It features a 6.7", IPS LCD, HDR10, 90Hz, 1080.0x2400.0 display and is available in Blue, Purple.

The Desire 21 Pro 5G is equipped with a Li-Po 5000 mAh, a 48 MP, 4K@30fps, 1080p@30fps, gyro-EIS main camera, a 16 MP, 1080p@30fps front camera. The device uses a Nano-SIM + Nano-SIM configuration. It weighs 205 g.

A bootloop on the HTC Desire 21 Pro 5G 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.