I just can't get it... I push the icon for transfer phone contacts, I get the new menu that says it make take a few minutes, then up comes the message: Send Business card by operating phone, press ok if you are done reading contacts and save numbers, or something like that. I click OK and it says no numbers stored.

It keeps doing that so I gave up. Drove around and when I got out of my and into the house, I noticed my phone says 'would you like to download your contacts to Pioneer Navi unit'. I went back to the car and I could not get that message to come up. Getting frustrated here.

BTW, my bluetooth works and I can make and receive calls with no problems.

i had the same problem with my nextel I880, i followed the instructions in the "phone book edit software" thread and i was able to create a list of contacts

Sprint Diamond here, I only have about 30 contacts, but they all transferred fine. If I remember correctly it took two tries though. Also, i updated Bluetooth to the most recent version from Pioneers website.