Samsung Galaxy S8 - Manual (Page 24)

Learn About Your Device 17
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Proximity sensor
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Turns off the screen and disables touch
functionality when the device is in close
proximity to the human body.
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Turns the screen back on and enables touch
functionality when the device is outside a
specific range to the human body.
•
Power key
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Briefly press to turn the screen on or off.
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Press and hold to select a power control option.
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Press twice quickly to launch the camera.
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Volume keys
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Adjust the volume for ringtones, calls,
notifications, and system sounds.
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In the camera app, press a volume key to take a
photo.
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Bixby key
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Launch the Bixby voice assistant. For more
information, see “Bixby” on page 29.