I've been putting up with this echo for the past few months on my Samsung Note 8. My Verizon rep also told me it was a problem caused by an app but, after spending an hour on it, told me he couldn't figure out which one. And ALL it was -- a simple @#$%×&! setting.
Thank you! Maybe YOU should have gotten the commission instead of him.
I wish that was the fix for mine. Going into the sound settings is how I fix it, but mine echos with the concert hall setting turned off. The only way to stop it is to turn the concert hall effect on and then back off again. Doesn't permanently stop the problem though. Even tried a factory reset but still randomly happens. That's only only one of about 1,000 problems I'm having with my S8 though
Thank GOD for your reply. I've been having this issue lately and it was annoying me SO MUCH. Problem is now fixed now after going into my settings and turning that off (how or why it turned on in the first place I have absolutely no idea)
Thank you so much for reaching out! This forum is for support of US products and customers. As your product is a non-US model and support for these models is very limited, please seek a support team for your area. You can do so by using this link provided below. http://www.samsung.com/visitcountry