If your OnePlus 15 screen stays too bright or too dim, Adaptive Brightness may not be working as expected. This makes the phone uncomfortable to use, especially when moving between indoor and outdoor lighting. The issue is usually caused by permissions, sensor behavior, or system settings that are easy to fix.
Why Adaptive Brightness Is Not Working on OnePlus 15
- Adaptive Brightness is turned off in Display settings.
- The phone has not learned your brightness preferences yet.
- Sensor access is blocked or restricted.
- Power saving features are limiting display adjustments.
- A temporary system bug is affecting brightness behavior.
1. Make Sure Adaptive Brightness Is Enabled
Adaptive Brightness must be enabled before the phone can adjust the screen automatically. If it is off, the brightness level will stay fixed no matter the lighting around you.
Open Settings, and then tap Display.
Tap Brightness, and then turn on Adaptive Brightness.
2. Manually Train Adaptive Brightness
Adaptive Brightness learns from your manual adjustments over time. If the feature has no usage data, it may not react properly to lighting changes.
Go to a bright area, and then adjust the brightness slider manually.
Move to a darker area, and then lower the brightness again.
Repeat this a few times so the system can learn your preferences.
3. Check Sensor Permissions
The ambient light sensor needs system access to work correctly. If permissions are restricted, Adaptive Brightness cannot detect lighting changes.
Open Settings, and then tap Privacy.
Tap Permission manager, and then check sensor access for system apps.
Make sure no system service related to display or sensors is blocked.
4. Turn Off Power Saving Mode
Power saving features can limit background sensor activity. This can stop Adaptive Brightness from updating in real time.
Open Settings, and then tap Battery.
Tap Power saving mode, and then turn it off.
Lock the screen and unlock it again to test the brightness.
5. Clean the Front Sensor Area
Dirt or fingerprints near the front camera can block the light sensor. This causes incorrect brightness readings.
Wipe the top portion of the screen using a clean cloth.
Lock the phone, and then unlock it under different lighting conditions.
6. Restart the Phone
A restart refreshes system services, including display and sensor processes. This often fixes temporary brightness issues.
Swipe down to open Quick Settings, and then tap the Power icon.
Tap Restart, and then wait for the phone to boot up fully.
Adaptive Brightness on the OnePlus 15 usually improves once the system relearns your habits and regains proper sensor access. After these fixes, the screen should adjust smoothly as lighting changes throughout the day.
FAQs
How long does Adaptive Brightness take to learn my preferences?
It usually takes a few days of regular use. Manually adjusting brightness in different environments helps speed this up.
Does Adaptive Brightness save battery on the OnePlus 15?
Yes. It prevents the screen from staying brighter than necessary, which helps reduce power consumption.
Why does my screen suddenly get too dark indoors?
This can happen if the light sensor is partially blocked or if the system has learned incorrect brightness levels. Cleaning the sensor area and retraining the feature usually fixes it.
