I carry 2 phones, a Blackberry for work that is locked and doesn't let me install anything and a Windows phone for personal use. I paired both phones and was listening to Nokia Music+ which allows offline storage of stations so it doesn't continuously hit my data plan. I then told the system to connect to my Blackberry. I was shocked when the music kept playing from my Windows phone while the voice functions switched to my Blackberry. This provides the perfect setup for me since all my phone calls go through my Blackberry and the other functions are from the Windows phone. Well done Ford/Microsoft!