Change your backlighting
1.
On the home screen, swipe down from the top of the screen.
2.
Tap
Settings > Display.
User Guide
Settings
190
3.
To adjust the brightness, move the slider back and forth.
Tip: After you swipe down from the top of the screen, if you see
in the quick settings, you can tap
to display the
slider without going into the Display screen.