Make sure your phone supports the Bluetooth phonebook access (PBAP) profile and contains the caller’s names in its phonebook. If so, turn off the car kit and press and hold the call button while turning on again and follow the voice prompts to reset the car kit to factory default condition. The car kit resets and you hear “Ready to pair” and see the status light steadily lit in blue. After pairing, you should be asked by your phone to grant phonebook access to your car kit. If prompted, say "Always accept".