the real reason school teachers hate mobile phones

Mobile phones can be used by students to record verbal abuse to hold teachers accountable.
Restrictions on mobile phone use at schools gives teachers leeway for verbal abuse, so teachers lobby for stricter laws against mobile phone use by students.

Teachers say this is to "protect privacy", but where a teacher commits verbal abuse, their "right to privacy" ends.

A popular reason cited against mobile phone use by students is distraction from social media, but why would a teacher care how their students use social media? No, the main reason is that teachers fear having their verbal abuse exposed.