Samsung SM-A115W User Manual page 34

Basics
Lock screen
Pressing the Side key turns off the screen and locks it. Also, the screen turns off and
automatically locks if the device is not used for a specified period.
To unlock the screen, swipe in any direction when the screen turns on.
If the screen is off, press the Side key to turn on the screen. Alternatively, double-tap the
screen.
Locked screen
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