do 2 things meanwhile use a good pair of headphones because call transmission is priority over audio signal so for clarity u need quiet environment use headphones with good mic and second instead of samsung phone app for conference use zoom from Android Store it's cheap and uses VoIP it's fast and has more clarity and can connect upto 5 callers and yes read this article it'll answer your queries 👍👍👍👍👍👍👍👍👍 which phone u have s10???? https://www.androidauthority.com/why-conference-calls-sound-bad-and-what-you-can-do-about-it-1010669...
