Solution: Turn up the volume, just like a car navigator.

2. The music playing programming of some mobile phones is not compatible with the docking codes of some models, so you can only answer the phone but not listen to music.

Solution: It is recommended to change the Bluetooth playing band, which can be used normally.

3. Multimedia music without Bluetooth in the car.

Solution: Turn on Bluetooth to play music.

4. The media audio on the mobile phone is not turned off, resulting in signal interference of Bluetooth function.

Solution: Turn off the media audio and keep the phone audio.

Extended data

Common faults of Bluetooth

Symptom: The Bluetooth connection is always disconnected.

1. Please confirm whether the operation steps are correct.

2. Bluetooth headset is not compatible with mobile phone. For example, the Bluetooth version is 1. 2 The mobile phone can't connect with the headset of Bluetooth version 1.

3. The Bluetooth headset is dead and needs to be recharged as soon as possible.

4. The compatibility between Bluetooth headset and mobile phone is not very good. The Bluetooth signal sent by the mobile phone can't be well received by headphones. Once there is an obstacle or a little distance between the earphone and the mobile phone, the earphone will automatically disconnect from the mobile phone and then turn it off automatically.