For about two weeks, I have been having a problem with the music randomly turning up to maximum volume. I thought it was a problem with the old iPhone (XS), after several reinstallations of apps and updating the phone to iOS 18 the problem persisted. I replaced the phone and on the iPhone 15 the problem still occurs, but surprisingly at a lower frequency. Normalizing the sound in the app options did not help. Please help or I will have a heart attack.