Increase the brightness using the device’s brightness keys or controls
Open display settings and raise the brightness slider
Turn off auto-brightness or adaptive brightness
Disable battery saver or low power mode
Check for night mode, blue light filter, or dark mode settings
Clean the screen to remove dirt or smudges
Make sure the display is not in a power-saving display profile
Update your display or graphics drivers
Restart the device
Check for hardware issues if the screen remains dim