I have a question about the brightness increments. When I connect my bluetooth keyboard to my Android phone (Nexus 5x) it takes only 10 increments to increase the brightness from minimum to maximum. When I use another method (mapping the volume keys to increase/decrease the brightness) it takes 16 increments to increase the brightness from minimum to maximum. I understand there is a key event associated with buttons Brightness Up (key code=221) and Brightness Down (key code=220). Why buttons from different controllers result in different increments?