When playing games, the brightness will still changes when you click a message or switch to other apps. / The automatic brightness adjustment is not turned on, and the screen becomes dark.
Cause:
Since the system brightness adjustment permission is open to third-party applications, some applications can control the brightness, and the brightness may change when exiting or entering these applications.
When entering some specific application scenarios, the device will automatically adjust the display brightness of the screen.
When the system detects that the phone temperature (CPU, battery, antenna, etc.) is high, the system will automatically reduce the screen brightness. When the temperature of the phone cools down, the screen brightness will resume again.