bapdco

My voice commands to the Command Unit are simple and the return talk is easily audible; however, my bluetooth phone calls (in & out) have very low volume. The volume level on my iPhone is up and even if I crank the radio volume,,it's still hard to hear. I'll be adding Apple Car Play shortly (this website won't let me link to the vendor's website) and hopefully it will resolve the problem. In the meantime does anyone have any suggestions?