Bluetooth phone connectivity and phone book

[MikeS]

I have a Nokia 6500 classic phone that has been used with my car for more than a year with no problems with connectivity. However, have noticed recently that although connectivity for using the phone is still OK the address book is no longer being transferred to the car. Tried removing the phone from the car's bluetooth connectivity and reconnecting but still have the same problem. Have also reset the phones bluetooth connectivity. Anyone else any ideas?

Edit 1 - Should have added that the 'car' now seems to be locked in a loop and the display states something along the lines of - transferring info from bluetooth device....................
Edit 2 - Checked the car is ok with another phone. So changed phone memory to 'phone & SIM' and then it started working again.