Galaxy S5 - Sub keys backlight are not working
* Please note, this section is designed to give you basic product troubleshooting information, also refer to your user manual for more information.
Q: While using my Galaxy S5, backlight of sub keys like Back Key, Home Key or Recent Key aren’t working.
What is the problem?
A : If sub keys backlight of your device are not working, please check the whether Power saving mode is on or not.
If Power saving mode is activated the “Turn off touch key light*” option if enabled(*located in the “Restrict performance”
area of the Power saving mode settings), it turns off the touch key backlight of device to save battery power.
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For all other queries or further technical assistance, please call Samsung Customer Care on 0800 726 786 or Live Chat with our Technical Team online, services are open 24 hours, 7 days."