LG V30 Guide De L'utilisateur page 114

Gesture view
After taking a selfie with the front camera, you can preview the selfie
immediately by placing the screen close to your face.
Tap
Only one preview is available each time a photo is taken.
If you rotate the device while in preview screen, the screen switches to
camera mode.
Save as flipped
Before taking a photo with the front camera, tap
The image is flipped horizontally.
When using the front camera, you can change how selfies are taken in
the camera options. See
Useful Apps
Gesture view to enable the Gesture view feature.
Customising the camera options
Save as flipped.
for details.
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