Samsung Galaxy Tab S8 Series User Manual page 121

Settings
Double tap to turn on screen
Turn on the screen by double-tapping instead of using the Side key.
From Settings, tap
◌
turn on screen to enable this feature.
Double tap to turn off screen
Turn off the screen by double-tapping instead of using the Side key.
From Settings, tap
◌
turn off screen to enable this feature.
Keep screen on while viewing
Use the front camera to detect when you're looking at the screen to keep it turned on.
From Settings, tap
◌
on while viewing, and tap
Advanced features > Motions and gestures > Double tap to
Advanced features > Motions and gestures > Double tap to
Advanced features > Motions and gestures > Keep screen
to enable the feature.
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