How to Fix Auto Brightness Not Working on REDMI Note 9 Pro

Checking Auto Brightness

• 💡 Auto brightness can be checked by expanding the control center and looking for the 'A' icon next to the brightness bar.
• 🎯 Enabling this 'A' icon indicates that automatic brightness adjustment is active.

Enabling Auto Brightness in Settings

• ⚙️ If the control center method is not accessible, navigate to Settings.
• 📱 Then, go to Display and select Brightness levels.
• ✅ Here, you can toggle the automatic brightness feature on.

Rebooting to Resolve Sensor Issues

• ⚠️ If auto brightness continues to malfunction, a reboot is recommended to reset sensors.
• ⚡ To reboot, press and hold the power button.
• 🔄 Select the reboot option (you may need to confirm twice).
• 🧠 Rebooting the device not only restarts the software but also the hardware components, including the sensors responsible for detecting ambient light levels.