Acer S57 User Manual - Page 69
Settings, Backup & reset, Factory data reset, Reset phone, Erase everything
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Advanced settings - 69 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 Apps menu. Tap Backup & reset > Factory data reset > Reset phone and then Erase everything to format your smartphone.
Advanced settings - 69
smartphone is not locked. Press any key or tap the screen to see if
the smartphone responds.
If your smartphone is responding to screen input, then open
Settings
from the
Apps menu
. Tap
Backup & reset
>
Factory data reset
>
Reset phone
and then
Erase everything
to format your smartphone.
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.