Problem with echo on call S21 Ultra

[RuShY]

Hi guys,
I have a really weird problem.
Since last week, shortly after I updated my phone, I have had complaints from people I call to, that they hear themselves talking to me, an echo of them voice.
I have the phone from February and before that I did not have such a problem until last week.
I shook myself in various forums, but I do not find a similar problem and its solution. Please help, because it is terribly annoying. As a primary solution, I have reduced my microphone to a minimum and so the echo is very weak and almost invisible, but from the other side do not hear me very well.

[Marauderman]

Welcome to the (unfortunate) Samsung Phone Echo Club.  As noted earlier by many - this has gone on way too long for this problem.

[speed coach]

Same problem here. Echo. I have done everything suggested multiple times and it doesn't fix the horrible echo. Makes my samsung worthless. What do I do now? 

[Bovo]

This is not echoing at Samsung... I'm sick of people complaining about it to me. I'll try turning WiFi off, but it is like disabling the windshield wipers in your car because the headlights won't turn on. I don't want to wait until the next storm to remember that this needs a solution, Mr. Samsung! 

[monyx]

to further your analogy -
it's like disabling the windshield wipers *while it's raining* because the headlights won't turn on *and it's night*.
WiFi calling is a necessity for some people, like myself, who live in poor reception areas. WiFi calling was the solution, at least before I *upgraded* to this POS phone

[Trucharts_czar]

I followed the instructions on this thread as follows (thanks to the person on this thread): - turned off "Video calling effects" and wifi calling along with rebooting phone after and tried two calls with my family and they did not hear any echo.. I will post if it happens again.