Restoring To Factory Settings - Acer Liquid Z630 User Manual

Restoring to factory settings

You may perform a clean boot to restore your smartphone to the
factory settings. Before performing a clean boot, ensure that your
smartphone is not locked. Press any key or tap the screen to see if
the smartphone responds.
Important
You should only perform a clean boot when all other options have failed
to restore your smartphone to an operational state.
This will erase all your personal information, any contacts stored on
your smartphone and any programs you installed.
If your smartphone is responding to screen input, then open Settings
from the Application menu. Tap Backup & reset > Factory data
reset > RESET PHONE and then ERASE EVERYTHING to format
your smartphone.
Advanced settings - 57