Yes that’s it. If the event is correctly identified like a mouse event then it should work fine. I will need from you some log, but I must create test app first. It takes me fee days, because we have feast in Slovakia. In the log I will see what samsung sends like “source” of that event. It could be unified with touch event, but absolute mouse for touchscreen works differently then absolute mouse for physical mouse. But maybe this can be fixed other way if you have android 8. In this version google adds special support for physical mouse.