I don't know the specifics for you phone, but there's an option to choose where to route the audio (you have to select it on the phone during a call). You can usually route it to the headset, speakerphone or Bluetooth.
txtroutbum, did you connect the auto-dim wire from the head unit to the headlight wire? If you did can you please let me know where the headlight wire is? I've been looking for it for hours with a volt meter. I have the 980BT.