This problem appears to be caused by a design flaw. Every year, each model is born with a few deficiencies and people have to wait to buy the next model, perhaps this could even be a sales policy. Users have been struggling with this problem for a very long time. Apple, which solves the heating problem in a short time, knows that the sound problem cannot be solved with software support, so it treats iPhone users who contact them as if they were the first person to call about this problem. Despite receiving so much criticism, Apple does not make a statement. We have a great reason not to buy Apple brand products again.