xDrive35d,

Look at this BMW CCA article link on Smartphone Integration

What we had until Sep 2008 was
1. the 6FL option which allowed the iPhone/iPod to connect to iDrive using the Y-cable
2. the snap-in adapter (plus eject box and frame to make it complete) for cell phones to connect to the car's power and to the antenna

Now it appears, from the link that I gave above, that you can get 6NF option to charge the phone, play music, and improve "telephone reception" (that article does not say "antenna connection").

I assume that the 2009 X5 Diesel does not have the new iDrive (see the Youtube link in my first post in this thread)?