Relative to some recent political reporting, a person was claimed to shout into a cell phone so loud that the other person had to take it away from his ear, and then other people in the restaurant heard the speaker.
Reminds me of the old submarine movies when the sonar operator, wearing headphones, is deafened by a depth charge explosion.
Don't cell phones have AVC on the mike input, and limited output volume?
Wouldn't the noise from a headphone be limited by the amp driving it?
Sounds like fiction in both cases.