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Change SIM PIN: Change the PIN used to access the
SIM card.
Make pattern visible: Show the pattern as you draw it.
Device administrators: View or deactivate apps you have
authorized to be device administrators.
Unknown sources: Check this option to permit installation
of apps from sources other than the Play Store.
Trusted credentials: Display trusted CA certificates.
Install from SD card: Install certificates from the memory
card.
Clear credentials: Delete all certificates.
Backup and Reset
Back up my data: Back up app data, Wi-Fi passwords, and
other settings to Google servers after you sign in to your
Google account.
Back up account: Set backup account.
Automatic restore: Restore previously backed up settings
and data when you reinstall an app.
Factory data reset: Reset your phone to factory default
settings. All your personal data from the phone's internal
storage will be erased. You can also erase the data on the
memory card during the process.
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