Zte Z557 User Manual page 121

Automatically lock: Set the time needed for the lock

protection to be activated after the screen turns off. This
option is available when a Pattern, PIN, or Password
lock is set.
Power button instantly locks: Lock protection is

activated immediately when you press the Power key.
This option is available when a Pattern, PIN, or
Password lock is set.
Lock screen message: Set the text that you may

display on the lock screen.
 Lock screen preferences: Set notification behavior and
customize text on the lock screen.
 Smart Lock: Keep the phone unlocked when connected to
trusted devices, in trusted places, or while being held or
carried.
 Location: Activate location services to determine your
location when using location-related applications. Set
location mode, app permissions, and more.
 Show passwords: Display characters in a password
briefly as you enter them.
 Device admin apps: Activate or deactivate apps to be
device administrators.
 SIM card lock:
Lock SIM card: Activate or deactivate the PIN lock to

require PIN before accessing the nano-SIM card.
Change SIM PIN: Change the PIN used to access the

nano-SIM card.
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