Adjust the Phone Screen Backlight (7800 Series) on Webex Calling (formerly Spark Call)
You can adjust the backlight to make the phone screen easier to read.
Backlights are not supported on the Cisco IP Phone 7811.
Backlights are not supported on the Cisco IP Conference Phone 7832.
Press Applications .
Press On to turn the backlight on or press Off to turn the backlight off.
Press to exit.