I got my galaxy s20 fe 5g 3 weeks ago. I bought the original adpater and it worked well with my samsung earphone. Last night i plugged the earphone in but i noticed that the music playing through the speaker. I dissabled USB audio routing in the developer setting but still not working.
hello, you may try below
♥ clear data | Settings → Apps → hamburger icon → Show system apps → USBSettings app → storage → clear data
♥ then turn off and on the phone