The Sony Xperia Z4v is a 2015 Android 5.0 smartphone powered by the Qualcomm MSM8994 Snapdragon 810 (20 nm) with 3GB and 32GB internal storage. It features a 5.2", IPS LCD, 1440.0x2560.0 display and is available in White, black.

The Xperia Z4v is equipped with a Li-Ion 3000 mAh, non-removable, a 7 MP, 4K@30fps, 1080p@60fps, 720p@120fps, HDR main camera, a 1 MP, 1080p@30fps front camera. The device uses a Nano-SIM configuration. It weighs 162 g.

A bootloop on the Sony Xperia Z4v 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.