Samsung GalaxyTab S7 FE SG User Manual page 114

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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