The most common reason is that Android’s adaptive brightness feature is not reading the surrounding light correctly. In some cases, the screen gets dimmer if the phone starts overheating, or if power-saving mode is turned on. Some devices will also lower the brightness if the face recognition or proximity sensors think something is blocking them. In this article, we’ve included several methods that can fix the screen dimming issue. Just follow the step-by-step guide below, and remember to do them in the order listed for the best results.
1. Disable Adaptive Brightness
The first thing you should try is turning off the Adaptive Brightness feature. If enabled, your Android device will keep changing the screen brightness depending on the lighting around you.
2. Increase The Screen Timeout
Check the Screen Timeout setting on your phone. If it’s set to a short duration (like 15 seconds), your screen may dim after just a few seconds and then turn black. To prevent this, set the timeout to a longer duration.
3. Change Your Secure Lock Settings
If disabling Adaptive Brightness and changing the Screen Timeout hasn’t worked, try adjusting your Secure Lock settings. This allows you to decide how long your device stays unlocked after the screen turns off.
4. Turn Off Power Saving Mode
When your Android phone’s battery runs low, Power Saving mode may activate automatically or stay on even after charging your phone. This feature reduces the screen brightness and other functions to save battery life.
5. Check Motion and Gesture Settings
Motions and Gestures are handy features you’ll find under the Advanced features menu, especially on Samsung phones. This uses the front camera to detect your face and keeps the screen on as long as you’re looking at it. If your screen dims after a few seconds, enable this feature to prevent your display from turning off while you’re using it.
6. Make Sure Your Phone Is Not Overheating
An often overlooked reason for screen dimming is overheating. When your phone’s temperature reaches 40°C (104°F), the system may slow things down and reduce screen brightness to protect your phone and save battery life. If your screen keeps dimming, check if your device feels hot. If it does, put your phone in a well-ventilated area and let it cool down. If overheating happens often, consider reaching out to your phone’s manufacturer as there may be an internal issue with your device.
