Chosen Solution
Hello, My galaxy s8 is echoing for people who are talking to me on it. They can hear themselves on their phone. I have tried all the software fixes I have found available, and I am pretty sure it is a hardware issue. I was just curious if I should replace the earpiece speaker or the i/o daughter board.
Try Reset network settings or turn off noise reduction in call settings
The answer was replacing the i/o daughter board
