Lock brightness is a function that turns off automatic brightness while you are launching a game. This feature is to prevent the screen from dimming when your hand accidentally blocks the light sensor while playing games.
To turn it on/off:
1. When you launch a game, swipe from right edge (landscape mode) or from bottom (portrait mode) to bring out the navigation bar. Tap the Game Genie icon.
2. Toggle the Lock brightness button to turn it on/off.
Note: This knowledge is currently only applicable for ZenFone6. Please stay tuned for further updates on our Official Website.