Patrol Officers often find that in low light situations the Android screen can be a little bright to work comfortably with.
To adjust the screen brightness swipe down from the top of the screen to reveal the following settings screen.
You can either adjust the screen brightness manually with the slider or you can set the device to auto adjust if that feature is available.
Auto brightness will adjust the screen brightness based on available ambient light. (darker for low light and brighter for daylight or a lit room.
Some tips on taking photos at night (working with the flash)