Samsung SM-G930F - Manual (Page 84)

Applications
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Using swipe gestures
Quickly control the preview screen by swiping in different directions. You can change the
shooting mode, switch between cameras, or apply filter effects.
Front camera preview
Rear camera preview Shooting modes Filter effects
Switching cameras
On the preview screen, swipe upwards or downwards to switch between cameras.
Viewing shooting modes
On the preview screen, swipe from the left to the right to open the shooting modes list.