Phone Screen Dimming Automatically Even With Auto-Brightness Off? (Easy Fixes)
If your phone screen keeps dimming automatically even though auto-brightness is turned off, the problem is usually caused by overheating, adaptive features, power-saving modes, or display protection settings. This issue happens on Samsung, iPhone, Xiaomi, Redmi, Oppo, Vivo, Pixel, Realme, and OnePlus phones. Here are the best fixes that actually work.
1. Turn Off Adaptive Brightness Completely
Many phones have multiple brightness controllers.
Go to Settings → Display → Disable Adaptive Brightness
2. Check for Overheating
When your phone overheats, the screen dims automatically to cool down.
- Stop gaming for a few minutes
- Remove phone case
- Move to a cooler place
3. Disable Power Saving Mode
Battery saver reduces screen brightness to extend battery life.
Settings → Battery → Turn off Power Saving Mode
4. Turn Off “Protect Battery” or “Thermal Protection” Features
Some phones dim the display to prevent overheating or battery stress.
- Samsung: Settings → Battery → Protect Battery
- Other brands: Search “Thermal” or “Battery Protection”
5. Disable “Extra Dim” Feature
Android has an accessibility feature that lowers brightness system-wide.
Settings → Accessibility → Visibility Enhancements → Turn off Extra Dim
6. Check Brightness in Game Mode
Many gaming modes force screen brightness changes.
Open Game Booster/Game Space → Turn off Auto Brightness
7. Turn Off Eye Comfort / Blue Light Filter
Night Mode automatically lowers brightness to reduce eye strain.
Settings → Display → Eye Comfort / Blue Light Filter → Turn Off
8. Reset Display Settings
If a recent update changed brightness behavior, reset display preferences.
Settings → Display → Reset to Default
9. Update Your Phone Software
Manufacturers release fixes for display and brightness bugs.
10. Factory Reset (Last Option)
If none of the above helps, a full reset removes

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