Lock Screen
This menu contains features that allows you to configure the device’s security parameters.
To secure data and limit phone access, set the device to require a screen unlock pattern each time you turn on the device, or every time the phone wakes up from sleep mode (when the screen automatically turns off).
►►From the Home screen, tap 
Apps g Settings g 
Lock screen g Screen lock.
The Screen lock menu allows to choose from a variety of locking features.
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