The Asus Zenfone Max (M1) ZB555KL is a 2018 Android 8 smartphone powered by the Qualcomm MSM8917 Snapdragon 425 (28 nm) Qualcomm MSM8937 Snapdragon 430 (28 nm) with 2GB | 3GB and 16GB | 32GB internal storage. It features a 5.5", IPS LCD, 720.0x1440.0 display and is available in Deepsea Black, Sunlight Gold, Ruby Red.

The Zenfone Max (M1) ZB555KL is equipped with a Li-Po 4000 mAh, non-removable, a 13 MP, 1080p@30fps (gyro-EIS) main camera, a 8 MP, 1080p@30fps (gyro-EIS) front camera. The device uses a Nano-SIM + Nano-SIM configuration. It weighs 150 g.

A bootloop on the Asus Zenfone Max (M1) ZB555KL 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.