Hello @littleshell
A warm welcome to the Samsung Community Forum.
While in the call try using your volume control button to see if that increases the volume of the person's voice.
Sometimes the quality of connection can affect the quality of your calls.
To add there is a diagnostic tool in your phone to check your phone.
Launch your phone app and dial *#0*# which brings up a number of tools.
A Samsung Experience Store or Samsung Service Centre can help you too.
Daily Driver > Samsung Galaxy s²⁴ Ultra 512Gb ~ Titanium Black.
The advice I offer is my own and does not represent Samsung’s position.
I'm here to help. " This is the way. "
