Whilst within a call can you use the volume rocker button to increase the call volume too @eggcup
Please do check all the ports and speakers for dust etc.
If your using a case and or screen protector ensure they are not hindering the mics and speakers.
Sometimes poor signal can cause issues too.
There is a diagnostic tool in your Samsung Members App.
Here are some Samsung Support Links.
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. "
