Keywords: 10BS, 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.
4. If you exclude the above possibility, email to email@example.com and tell us your phone model so we can test and find the problem for you.