I've had my Samsung Galaxy S20 for about a year. It hasn't been dropped or got wet etc.
On every call I make OR receive, the person at the other end complains they have an echo on their line and can hear their own voice echoing back to them. This happens when I'm not using hands free but it's EVERY call regardless of my battery status and so-on.
Does anyone know what the problem might be and know how to resolve it please?