Hi @UNKNOWNUSERNAME
Sometimes the connection between the calls can be the cause of some issues.
However whilst in an active call then try turning the volume up.
Also by using a torch check the phone's speakers for any build up of debris.
Use a bit of bluetac on the microphone on your phone and pull it away as this should remove any dust etc.
A screen protector that's not placed correctly can hinder the phone's microphones.
And so can a case.
Your phone has a diagnostic tool in your Samsung Members App too.
Samsung Help Link > What-to-do-if-the-sound-on-your-galaxy-smartphone-is-not-working-properly.
Samsung Help Link > What-to-do-if-you-cannot-hear-the-phone-call-sound-well.
A Samsung Service Centre can assess your phone.
If I can be of any further help then please don't hesitate. Take care. 😎
Daily Driver > Samsung Galaxy s²³ Ultra 512Gb in Phantom Black.
The advice I offer is my own and does not represent Samsung’s position.
I'm here to help. " This is the way. "
