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allowed, your nano-SIM card will be locked and you cannot
access the mobile phone network. Contact your operator for
a PIN Unlock Key (PUK) to restore the nano-SIM card.
Make passwords visible: Display passwords as you enter
them.
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.
Storage type: Check the credential storage type.
Trusted credentials: Display trusted CA certificates.
Install from storage: Install certificates from the phone
internal storage.
Clear credentials: Delete all certificates.
Trust agents: View or deactivate trust agents.
Screen pinning: Keep a screen of your choice in view, so
that others cannot switch to other apps and access your
personal information. See Protecting Your Phone With
Screen Pinning.
Apps with usage access: Turn on or off some apps’
access to your phone usage information.
Backup & Reset
Touch the Home Key > > Settings > Backup & reset to
manage data backup and restoration options and to reset the
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