From what I've read, you have no trouble pairing the D3 with your phone, right? If so, try the following steps:
Pair your phone with the D3.
On the D3, push the "menu" button.
Push "Function" button.
Push, "Phone book Transfer"
You will see a blank screen with the menu bar that read, "Menu/Phone Book Transfer.
Your D3 is now on transfer standby mode. The D3 is disconnected from your phone. Don't worry. This is normal. It is now ready for the transfer from your phone. Do Not try to pair it again.
Now, grab your phone and follow the instruction to transfer the phone book.