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operator for a PIN Unlock Key (PUK) to restore the micro-SIM card.
Make passwords visible: Display passwords as you enter them.
Device administrators: View or deactivate apps you have authorised to be
device administrators.
Unknown sources: Check this option to permit installation of apps from
sources other than the Play Store.
Auto-start management: Allow or deny app auto-start during system bootup.
App permissions: Check what apps have been allowed to access certain
permissions. You can also change the app permissions.
WARNING!
Changing the app permissions may result in the app not working correctly or
as originally intended.
Data Protection: Protect your data from unwanted access
Storage type: Check the credential storage type.
Trusted credentials: Display trusted CA certificates.
Install from SD card: Install certificates from the internal storage or the
microSD card.
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. Touch this option
to see how it works. See Protecting Your Phone With Screen Pinning.
Apps with usage access: Turn on or off some apps' access to your phone
usage information.
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