HTC One M9 - Manual (Page 272)

Settings 259
Brightness
By default, the screen brightness automatically adjusts depending on the surrounding lighting
conditions.
1. Tap > > Settings.
2. Tap Display & gestures.
3. Tap Brightness level.
4. Drag the slider to adjust the brightness.
5. Tap OK.
Set the Maximum Brightness Level
You can set the maximum brightness level for your phone screen.
1. Tap > > Settings.
2. Tap Display & gestures.
3. Tap Brightness level.
4. Clear the Automatic brightness option.
5. Drag the slider to adjust the maximum brightness level.
Quickly Adjust the Brightness
1. With two fingers, swipe down from the status bar to open Quick Settings.
2. Tap the BRIGHTNESS tile repeatedly to select the brightness intensity.
Screen Timeout (Sleep)
After a period of inactivity, the phone screen turns off to conserve battery power. You can set the idle
time before the screen turns off.
1. Tap > > Settings.
2. Tap Display & gestures.
3. Tap Screen timeout, and then tap the time before the screen turns off.
Note: Extended screen timeout periods reduce the battery’s talk and standby times.
Tip: To turn off and lock the screen quickly, press the Power/Lock button.
Daydream
Select your phone’s screensaver when it’s idle or docked.