Samsung's Video Brightness feature automatically cranks your screen to theater-mode brightness — here's how to turn it on.

The auto-brightness, or adaptive brightness setting as it's called on some Android phone models, is a feature that uses a light sensor to automatically adjust your phone's brightness based on ...

Most high-end smartphones have an ambient light sensor that can be used to determine how bright your phone’s display should be. If you’re in a dimly lit environment, the screen doesn’t need to be very ...

It’s one of the most pervasive messages about technology and sleep. We’re told bright, blue light from screens prevents us falling asleep easily. We’re told to avoid scrolling on our phones before ...