The Acer Liquid Z630S is a 2015 Android 5.1 smartphone powered by the Mediatek MT6753 (28 nm) with 3GB and 32GB internal storage. It features a 5.5", IPS LCD, 720.0x1280.0 display and is available in Black, Gold.

The Liquid Z630S is equipped with a Li-Po 4000 mAh, removable (15.2 Wh), a 8 MP, 1080p@30fps main camera, a 8 MP front camera. The device uses a Single SIM (Micro-SIM) or Dual SIM (Micro-SIM, dual stand-by) configuration. It weighs 165 g.

A bootloop on the Acer Liquid Z630S 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.