LG D520 - Manual (Page 97)

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Set up SIM card lock – Set up Micro SIM card lock or change the Micro SIM
PIN.
Password typing visible – Show the last character of the hidden password as
you type.
Phone administrators – View or deactivate phone administrators.
Unknown sources – Allows you to install non-Play Store applications.
Trusted credentials – Display trusted CA certificates.
Install from storage – Choose to install encrypted certificates.
Clear credentials – Remove all certificates.
< Language & input >
Use the Language & input settings to select the language for the text on your
phone and to configure the on-screen keyboard, including words you've added
to its dictionary.
< Backup & reset >
Backup my data – Set to backup your settings and application data to the
Google server.
Backup account – Set the account to which you want to backup data to.
Automatic restore – Set to restore your settings and application data when the
applications are reinstalled on your device.
Collect diagnostics – Allows you to select if you want to allow diagnostic data to
be sent to T-Mobile.
Factory data reset – Reset your settings to the factory default values and delete
all your data. If you reset the phone this way, you are prompted to re-enter the
same information as when you first started Android.
SYSTEM
< Date & time >
This menu allows you to set how dates will be displayed. You can also use these
settings to set your own time and time zone rather than obtaining the current
time from the mobile network.