Bluetooth on 09 XK

I just bought an 09 XK with navigation and Bluetooth. The BT works for my phone, but plugged in via the USB it does not recognize that it is plugged in to anything. Does the docking only work with actual music players like ipods, and not phones?

I traded in my 10 Chrysler Sebring, which I liked a lot, and there are definitely things like that I miss already. No voice calling, I cant just hit the phone button and say “call my husband”. The heated seat back, not just seat, and the remote start. However, I think I have live with the swap of the remote start for never having to look for my keys again, if they are in my purse, I am good to go!

How it got called Bluetooth!