For not much money you could add a control switch button to your Android system, either on the steering wheel, or somewhere on the dash, see the examples on eBay here:She has never had to! I turn the music down when she talks lol. It would be nice to have volume buttons in theory, but I don't think I have ever had the volume dial from my car's previous radio used. So for me, does not matter. Maybe can install an app to put a volume adjust overlay or something though? That would be pretty easy to code