Have people tried using headphones to see if that eliminates the echo? That would help narrow down if it's the phone's speakers or microphone causing the problem. Thinking about different gaming experiences, a game with poor audio can really ruin the immersion, just like a bad call. It makes you appreciate titles where the sound is crisp and clear, not the kind where it sounds like you're perpetually navigating a virtual echo chamber, a bit like trying to play Slope Unblocked with constant echoing sound effects. Hopefully, there's a software fix for this soon!