So, my mother in law had a haunted iPhone that would only play the ringtone very softly over her hearing aids, or not at all. This is a widely reported problem with no known working solution. (I HAVE TRIED EVERYTHING YOU CAN GOOGLE). Today we migrated her to a new iPhone 16e, and it transplanted the problem from her iPhone 8! I suspect this is a messed up setting with no UI element (anymore). Is there some kind of iPhone registry viewer? Or a way to reset the audio settings to defaults?