Nokia Lumia 521 - How do I adjust the display brightness on my Lumia phone?

  1. From Start, swipe left, and select Settings > brightness.
  2. Switch Automatically adjust to Off, and switch between three levels low, medium and high.
  • Automatically adjust is set by default, then the light sensor observes lighting conditions and adjust the illumination of the screen and bottom keys to the environment.
  • When using high brightness settings or when displaying white or vibrant colors the screen will use more energy. Obviously this will also influence battery life. Also, note that the battery saver mode is to reduce further the screen brightness for saving battery.