Samsung SM-A300FU User Manual page 39

Motions & usability features
Mute/pause
On the Apps screen, tap Settings → Motions and gestures → Mute/pause, and then tap the
Mute/pause switch to activate it.
Placing palm on screen
Cover the screen with your palm to mute incoming calls or alarms.
Turning device over
Turn the device over to mute incoming calls or alarms.
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