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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
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