Zte Z799VL User Manual page 116

access the mobile phone network. Contact your 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
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 SD card: Install certificates from the memory
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.

Apps with usage access: Turn on or off some apps'
access to your phone usage information.
Navigation Key
You can swap the positions of the Back key and the Recent
apps key. Select an option to make the switch.
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