It could also be the students hide them better, because they aren't allowed to have them. When I visited one of our offices in India there was a phone ban. Emp

It could also be the students hide them better, because they aren't allowed to have them. When I visited one of our offices in India there was a phone ban. Employees were given a locker for their phone (and other stuff if they wanted), where the phone was to remain while they were in the work area. Being a visitor, I complied, but then quickly found out almost no one else did. They all secretly had their phones out doing whatever when the boss wasn't looking. I stopped locking mine up after a bit as well after seeing this.