Echo when on speakerphone with another iPhone
I have an iPhone 11 Pro Max. When I am on speaker phone with another caller, and they are on speakerphone too, they are getting an echo of themselves speaking.
It seems less obvious if I don't have a case on the phone, and more severe with a case on. I have tried multiple cases and it doesn't seem to make a difference.
I don't have my issue on the 11 Pro Max, it is just the other caller, and if one of use is not on speaker then the issue goes away.
It is with all iPhone users I have tried it with.
Restarted the phone and reset network settings, but that did not help.
Any ideas?
iPhone 11 Pro Max