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Unknown sources:
Check this option to permit installation
of apps from sources other than the Play Store.
Verify apps:
Disallow or display warnings before you install
applications that may cause harm.
Trusted credentials:
Display trusted CA certificates.
Install from SD card:
Install certificates from the memory
card.
Clear credentials:
Delete all certificates.
Backup & 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.
Backup account:
Select the Google Account that your data
is backed up to.
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
microSDHC card or the internal SD card during the process.
Accounts
Manage your accounts and synchronization settings. Touch
Add account to sign in to or create accounts on your phone.