Setting When To Turn Off The Screen; Screen Brightness - HTC One User Manual

170 Settings and security
Screen not rotating?
Recalibrate the screen if you feel that the screen orientation does not respond
properly to the way you hold HTC One.
1. Go to Settings, and then tap Display & gestures (or Display, gestures
and buttons).
2. Tap G-Sensor calibration.
3. Place HTC One on a flat and level surface, and then tap Calibrate.
4. After the recalibration process, tap OK.

Setting when to turn off the screen

After a period of inactivity, the screen turns off to conserve battery power. You can
set the idle time before the screen turns off.
1. Go to Settings, and then tap Display & gestures (or Display, gestures and
buttons).
2. Tap Screen timeout, and then tap the time before the screen turns off.

Screen brightness

1. Go to Settings, and then tap Display & gestures (or Display, gestures and
buttons).
2. Tap Brightness.
3. With the Automatic brightness option selected, drag the slider to set the
maximum brightness level. This sets a limit on how bright the screen will be
when Automatic brightness is selected.
4. To set the brightness manually, clear the Automatic brightness option, and then
drag the brightness slider to the left to decrease or to the right to increase the
screen brightness.