Check if the Device is in Power Saving Mode
Check if your device is in power-saving mode as some of its features dim screens to conserve power. What is this? Depending on your Android device, you can find the option by scrolling down your android quick setting menu from the top of the screen or bottom.
Why does my computer screen keep dimming and brightening?
Laptops often come with sensors that will check the ambient light in a room. If the light changes, or the sensors thinks it’s changed, it will adjust the brightness of the screen to suit the level of light. This feature is called adaptive brightness and it may be responsible for the screen dimming or brighnting.
How do I stop my screen from dimming Windows 10?
Go to Start > Control Panel > Hardware and Sound > Power Options > Change plan settings > Change advanced power settings > select Display and turn Enable adaptive brightness to Off.
Why does my screen dim randomly Windows 10?
Windows 10 comes with a feature called adaptive brightness that automatically adjusts the brightness of your display. If this option is enabled, and the surrounding environment changes, Windows automatically dims your screen. In this case, turn the adaptive brightness feature off and see if your issue gets resolved.