Calling time ECO type sound come from speaker.

When I calling someone or when someone calling me that time irritating sound will come from speaker ( sometime I don’t able to hear a sound from person and sometimes they hear a irritating sound from me on calling, and if when bluetooth connected that time also this irritating sound problem )

Only in simple call sometime this problem will happen.

But whatsaap call is clearly perfect.

Please Give me a solution 🙏