Unfortunately, the Bluetooth functionality is with Volkswagen and Skoda handsfree - neither original nor Fiscon retrofit compatible. It seems only the message "phone is not compatible." Pity - so far Nokia has always been very good phone quality and best compatibility known for hands-free (at the current Lumias there also no problem) In addition, the phone does not even have keys for volume control. Recommendation: If someone is looking for a still good button phone from Nokia: Asha 300 buy out the