The screen brightness will be automatically adjusted by this weight according to your location's sunrise and sunset times, and it will adjust smoothly depending on daytime. To save and utilize for future sunrise and sunset calculations, location data should only be requested or set manually once. This is a good solution for those devices that lack an auto screen brightness sensor or to make screen brightness adjustment more flexible and convenient. The widget can also prevent the screen from sleeping while the charger is connected. If you're using your device in the car while driving, this option is great.