On the LG device, the control bar (navigation bar) can be automatically hidden in selected apps, allowing apps to be launched in full screen mode.

To hide the navigation bar during use, simply wipe from the bottom of the screen to the top and the control bar will be displayed for 3 seconds before it disappears again.

Android 9 (LG UX 9.0)
Step 1:  Open the  Settings
Step 2:  Tap on  Display
Step 3:  Tap on  Home touch buttons
Step 4:  Tap on  Hide Home touch buttons
Step 5:  Enable or Disable desired  app
Step 6:  Confirm with  OK
  1. Open the Settings
  2. Tap on Display
  3. Tap on Home touch buttons
  4. Tap on Hide Home touch buttons
  5. Enable or Disable desired app
  6. Confirm with OK

LG Instructions
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