Your vivo X300 Pro might occasionally dim its screen without warning. It can happen while watching videos, browsing, or gaming, and it makes the display look dull even when brightness is set high. This issue usually comes from automatic settings or system optimizations designed to save power.
Fortunately, there are a few quick adjustments you can make to keep your screen brightness consistent.
Why Your vivo X300 Pro Screen Might Dim Randomly
- Auto-Brightness or Adaptive Brightness is enabled.
- Eye Protection or Comfort Mode automatically adjusts color and brightness.
- Power Saving Mode limits display brightness to conserve battery.
- High temperature triggers automatic brightness reduction to prevent overheating.
- Software bugs or outdated firmware affect display performance.
Disable Auto-Brightness.
The Auto-Brightness feature adjusts the display based on lighting conditions. While useful, it can make your screen dim unexpectedly.
- Open Settings, and then tap Display and brightness.
- Toggle off Auto-Brightness to keep the brightness level steady.
Once it is off, manually adjust the brightness slider to your preferred level.
Check Eye Protection Mode.
Eye Protection Mode can cause the screen to appear dimmer by reducing blue light. It might be scheduled to turn on automatically.
- Open Settings, and then tap Display and brightness.
- Tap Eye Protection, and then turn it off or adjust the intensity.
If you prefer using it, lower the filter strength so the screen remains bright enough.
Turn Off Power Saving Mode.
Power Saving Mode restricts system resources and can automatically lower brightness to extend battery life.
- Open Settings, and then tap Battery.
- Tap Power Saving Mode, and then toggle it off.
After that, check if the display brightness stays stable during use.
Prevent Overheating.
When the device temperature rises, the system automatically dims the screen to protect internal components. Avoid heavy gaming or prolonged camera use in hot environments.
Let the phone cool down before using it again. Once the temperature normalizes, the brightness should return to normal.
Update the Software.
An outdated system version can cause performance bugs, including display dimming issues. Keeping your vivo X300 Pro updated helps maintain stable brightness levels.
- Open Settings, and then tap System update.
- Tap Check for updates, and then follow the prompts if a new version is available.
After installing the update, restart your phone to apply the changes.
Reset Display Settings.
If the issue persists, resetting the display settings can help remove misconfigurations. This restores all display-related options to their defaults.
- Open Settings, and then tap System management.
- Tap Backup and reset, and then tap Reset all settings.
Your data will remain safe, but you may need to reapply custom preferences afterward.
Random screen dimming can be annoying, but it is rarely a serious hardware issue. Adjusting brightness settings, disabling automatic features, and keeping your software updated usually resolve the problem completely.
FAQs
Why does my vivo X300 Pro screen dim during games or videos?
This often happens when the device heats up, triggering automatic brightness reduction. Letting the phone cool down restores normal brightness.
Can Auto-Brightness cause screen dimming even indoors?
Yes. If the light sensor detects changing lighting conditions, it may lower brightness even when you are indoors. Turning off Auto-Brightness fixes this.
Will resetting settings delete my data?
No. Resetting all settings only reverts system preferences like display and sound options. Your apps, photos, and personal data will remain untouched.
