Voice commands in general work decent and the dialer is usually spot on, but as a added bonus on the Galaxy phones your supposed to be able to shout out a wake up command("hi galaxy"is the default) and never have to touch any thing, this is what I was referring to that is hit or miss. Plus with the mp3 player you can just say next, previous, pause, play, volume up, volume down. And not have to touch anything, but I usually just end up using the jog dial on the sena. But once S voice has been initiated I have no problems