Navigation Key - Zte Z837VL User Manual

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 phone
storage or the microSDHC 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. See
Screen Pinning.

Apps with usage access: Turn on or off some apps'
access to your phone usage information.

Navigation Key

Swap the positions of the Back key and the Recent apps key.
Select an option to make the switch.
Date & Time
Set date, time, time zone, and how time is displayed. You can
also use network-provided data. See
Time.
Language & Input

Language: Select a language and region for your system.

Spell checker: Use Google Spell Checker to check for
Protecting Your Phone With
Setting the Date and
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