Settings132• Screen timeout: Set the length of time the device waits before turning off the display’sbacklight.• Keep screen turned off: Set the device to prevent the screen from turning on when it isin a dark place, such as a pocket or bag.• Screensaver: Set the device to launch a screensaver when the device is charging.Blue light filterReduce eye strain by limiting the amount of blue light emitted by the screen.While you are watching HDR videos from HDR-exclusive video services, the blue lightfilter will not be applied.1 On the Settings screen, tap Display → Blue light filter, and then tap the Turn on nowswitch to activate it.2 Drag the adjustment bar to adjust the filter’s opacity.3 To set the schedule to apply the blue light filter to the screen, tap the Turn on asscheduled switch to activate it and select an option.• Sunset to sunrise: Set the device to apply the blue light filter at night and turn it off inthe morning, based on your current location.• Custom schedule: Set a specific time to apply the blue light filter.Wallpapers and themesChange the wallpaper settings for the Home screen and the locked screen or apply variousthemes to the device.On the Settings screen, tap Wallpapers and themes.• Wallpapers: Change the wallpaper settings for the Home screen and the locked screen.• Themes: Change the device’s theme.• Icons: Change the icon style.