Power On/Unlock your Device
Press and hold the Power button on the back of your LG G6 until the LG logo appears on the display.
Hold Down Power + Volume Down
Press and hold the Power button and the Volume Down button to take a screen shot.
If you hold both buttons for more than 10 seconds your LG G6 my soft reset.
When a screenshot has been taken, the display will flash, then minimize the screenshot. A notification will also display in the notification panel.
Screenshots taken will be saved to Pictures > Screenshots.
The Screenshot folder will only display after a screenshot has been taken.