To improve your display brightness on your XP10, follow these steps: 1. Ensure adaptive brightness is turned ON. (It is ON by default from the factory.); 2. If you find your XP10 is still not bright enough in a dark room, you can always increase the brightness level manually while keeping adaptive brightness turned on, and 3. You may choose to disable adaptive brightness altogether. NOTE: Customers that have enabled DARK THEME (under Android Settings –> Display) may experience/report that the device brightness while adaptive brightness is on is too dark. Sonim is exploring ways to improve the user experience for users that use the Dark Mode theme.