Not only can this wreak havoc on your eyes, it can also be annoying, especially when your screen is either too bright or too dim. Thankfully, Windows 10 makes it easy to change the brightness of ...
Choose the Systems tile. Move to the Display section on the right. Under Change brightness for the built-in display, look for the Automatically adjust contrast based on the display content to help ...
Open the Settings app. 2. Tap Display & Brightness. How to change brightness manually on your iPhone There are two ways to change the brightness manually on an iPhone if you've turned off Auto ...