A new feature was added in the newer devices that allows you to easily transfer your Address Book via Bluetooth device. This could be used if you were switching devices or if you wanted to share your address book with a new colleague. To allow address book sharing you need to do the following:
1. Options –> Bluetooth, if you Bluetooth is not enabled then you will need to enable it.
2. In the Address Book Transfer field, select All or Hotlist only. Hotlist only setting will transfer solely the contacts that you have talked to recently over the phone.
3. Pair your device.