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.

[Hitch12]

Seems to be only on calls. Messenger worked fine. 

[Justworkdamnit]

Mine is opposite.  It ONLY happens when I have people on speaker phone.  Goes away when go back to holding it like a phone.

[Justworkdamnit]

My apps are up to date and I am unable to use speaker phone (how I do 90% of calls) because of this issue.  The people on the other end have severe echo.  Tap speaker off and instantly gone.  Phone is worthless to me because of it.

[Justworkdamnit]

Has to be software as mine is exact opposite across the board but still equally annoying.

[Pamela17]

I'm having this issue, when they hang up to try again then I can't hear them at all. I've had my phone since spring 2021 and didn't have this problem. I cant get a different phone 

[Taylorpav]

I'm having the exact same issue. Doesn't matter if the call is incoming or outgoing.

[Reta521]

Mine is the same. When im on speaker, the other person hears an echo. I've tested it with at least 5 people, all different types of phones. 

[Moneymaker0886]

Actually it depend whit what application your doing voip calls. I am using samsung s10+ and I have the same echoing issue. Samsung should fixe it. When using Fongo application, I need to turn the speaker ON to kill the echo completely. But if I am on TEXTNOW application, the only way to get rid of the echo is by plugging in a pair of headphone because turning the speaker ON will make my voip call worst with textnow. 

[AndrewL]

For those of you experiencing this issue, can you try heading to the Samsung Members app > Press and hold on the app icon > Diagnostics > Mic, and follow the on screen instructions. Is the issue present during these tests?

[Justworkdamnit]

This dis not help.  When using the diagnostic tool the mic is fine.

However, if I am on a cellular or wifi call and I turn on speaker phone the person on the other end is subjected to a bad echo.