Well, depends I guess. I had a dumbass teacher who gave me an F+Kept me out of his class for the week because my phone rang during his lecture. (Was kept out of class because I refused to give him my phone.) He was a new teacher, but still. (He later got fired for basically failing 75% of his students lol.)
See, I understand that that can be disruptive, but if it had just happened once then obviously it wasn't intentional. I don't understand how educators think booting kids out of class or retracting from their grade for something so trivial is fair.