Keywords: CK11, No sound, noisy sound, the other side can't hear me
1. For better conversation quality, please make sure that the your car window is closed.
2. When your phone's signal is not so well, it will affect your conversation quality(interlocutor can't hear you or sound with noise). Please confirm if this situation happens sometimes or always.
3. It may also be the reason of unstable connection, please try to reset and re-pair the car kit::
4. It may also be a bit loose inside the battery compartment. You can fix the issue with the following steps:
If you exclude the above possibility, email to [email protected] and tell us your phone model so we can test and find the problem for you.