Samsung Galaxy core prime User Manual page 318

Lock Screen Setting
Make pattern visible
Lock automatically
Lock instantly with power
key
Access Lock Screen Options
■
From home, tap Apps
 The Lock screen settings menu opens.
Settings
Description
Display the pattern as you draw it
Screen will be locked in 5 seconds after the screen automatically turns
off
Lock the screen whenever you press the Power/Lock Key
> Settings > Lock screen.
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