I haven't tried it with any recent phones, but way back when I had a Palm Treo 650, it did much to my surprise Bluetooth itself up to both my GPS device (Holux GPSlim 236) and also my car phone (Nokia CK-7W) at the same time. Yes, you could navigate and take a call at the same time. When that happened, the TomTom instructions even came out of the Empeg through Bluetooth mixed with the call audio. Pretty rockin' back then.