How to Fix iPhone Screen Brightness Issues

Step by step

1. 30 sec

   Disable Auto-Brightness

   Open Settings and navigate to Accessibility. Select Display & Text Size, then toggle Auto-Brightness to the off position to determine if the sensor is miscalibrated.

   Note: Keeping Auto-Brightness off helps identify if software settings are overriding your manual adjustments.
2. 1 min

   Review True Tone Settings

   Go to Settings, select Display & Brightness, and toggle True Tone to off. This prevents the display from dynamically adjusting color temperature based on ambient lighting conditions.

3. 1 min

   Deactivate Night Shift

   Within the Display & Brightness menu, select Night Shift. Ensure Scheduled is set to off and manually toggle Off for 'Manually Enable Until Tomorrow' to prevent warm color biasing that may appear as low brightness.

   Note: Night Shift is often mistaken for a dim screen due to the reduction of blue light.
4. 1 min

   Disable Reduce White Point

   Navigate to Settings > Accessibility > Display & Text Size. Scroll to the bottom and ensure Reduce White Point is toggled off; if enabled, drag the slider to 0% to restore maximum luminescence.

   Note: This is the most common cause of a screen appearing dim despite high brightness settings.
5. 30 sec

   Perform a Force Restart

   Press and quickly release the Volume Up button, press and quickly release the Volume Down button, then press and hold the Side button. Continue holding until the Apple logo appears to clear temporary display drivers.

6. 2 min

   Reset All Settings

   Navigate to Settings > General > Transfer or Reset iPhone > Reset. Select Reset All Settings to return display preferences to factory defaults without erasing your personal data.

   Note: Only use this step if display brightness remains unresponsive after the previous checks.