Not a single response, can anyone with the boom 4.3 at least tell me if the voice activation is supossed to work on this model because i cant get it to work at all. I figured out all the other stuff, just cant get the voice commands to work. Dont know if its user error or if this feature is only on the 6.5 model. I dont believe its my head set because i can manually make phone calls by scrolling through the menu of contacts and pressing the one I want. Any help would be nice. I read the manual and it does not specifically tell you for the 4.3.