Keywords: Ego, No sound, noisy sound, the other side can't hear me
1. For better conversation quality, please wear the headset for calls and 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 headset::
If you exclude the above possibility, email to firstname.lastname@example.org and tell us your phone model so we can test and find the problem for you.