How to properly outsmart your students

Some of these phones look so out of date that you couldn't really cheat off of them if you tried

That's a LOT of cheaters.

*has multiple phones*

Some of those seems like brazillian (portuguese maybe) names

I'm not in school anymore, but was never a fan of these things and probably would have gotten in trouble because if you tell me to turn the phone off and not have it out, that's absolutely fine, but it is my property and will stay with me at all times. I never ran into that issue at school because I knew I'd refuse to give it up if I was caught using it, so I didn't use it.