POCO F8 Ultra: Fix Auto Brightness Not Working - Step-by-Step Guide

Troubleshooting Auto Brightness on POCO F8 Ultra

• 💡 Settings Adjustment: Navigate to Settings → Display → Brightness. First, disable auto brightness, then lower the brightness level, and finally re-enable auto brightness to see if the issue is resolved.
• 🧼 Sensor and Camera Cleaning: Use a microfiber cloth to carefully clean the front-facing camera area and the ambient light sensor, which is often located near the camera.
• 📈 Brightness Level Test: To test the sensor's functionality, manually set the brightness to 100%, then turn auto brightness off and on again.

Advanced Troubleshooting Steps

• 🔄 Phone Reboot: If the above steps don't work, perform a reboot by pressing and holding the Volume Up and Power buttons simultaneously, then slide the power off icon to reboot the device.
• ⚙️ System App Updates: Go to Settings and check the System Updater. Look for updates related to MIUI security plugins, especially those concerning display or ambient light sensors, and install any available updates.
• 📱 System Updates & Support: Check the 'About phone' section for any available MIUI system updates. If none of the troubleshooting steps resolve the auto brightness issue, it may be necessary to contact authorized support for further assistance.