If your device encounters errors or certain adjustments seem irreparable, you can restore the manufacturer's data to return the device to its original state as when first purchased.
Note: All data on the device (contacts, images, messages, etc.) will be erased.
To restore factory settings on Asus Zenfone 4 Max ZC520KL, follow these steps:
Step 1: Go to 'Settings' and choose 'Backup & Reset'.

Choose 'Backup & Reset'.
Step 2: Select 'Factory Data Reset'.

Select 'Factory Data Reset'.
Step 3: Select 'Reset Device'.

Select 'Reset Device'.
Congratulations on completing your setup process. Wishing you success.
