If you want to change screen brightness when plugged in or on battery ... You can click on the volume/Ethernet/Wi-Fi icons or use the keyboard shortcut, Win+A. Either way, it opens the same ...

which should be the furthest icon to the right, and looks like a square speech bubble. 2. At the bottom of the pop-up menu, use the brightness lever to adjust your screen brightness by moving the ...

2. Change the brightness by sliding your finger up and down on the sun icon. Why does my iPhone screen keep dimming with Auto-Brightness off? When you find that your iPhone is still dimming ...