Smart phones

I sub in 11 high schools but only one has a rule against cell phones and the difference is stark. Most times the students finish up their assignment early and are allowed what is called free time. It may be a few minutes or as much as 20 minutes. In the school with no phones the students spend time visiting but in the other schools most of them go on their phones. In study hall they are mostly on phones and for many even lunch time is spent on the phone. After school waiting for rides they are on the phone and even walking toward their cars they are on the phone. The ones that get to class early for first period go right on the phone. The only time it gets noisy is when two or three get together to share something amusing on their phones. They spend lots of time taking pictures of themselves and others and then laughing about the pics.