I feel like post this in every LG forum these days, but it's the first app install when I get one. All it does is reprogram what shortcut the volume up key does (I usually like flashlight) and is completely free.
https://forums.androidcentral.com/e...ls?id=com.apptuners.keyplusapp&token=mhJitjob
https://forums.androidcentral.com/e...ls?id=com.apptuners.keyplusapp&token=mhJitjob