Even experiencing phones in school 15 years ago, I can say they 100% sapped attention and left me worse off than any benefit having a phone on you would do. It probably went on to lead to poor sleep habits outside school as well. Certainly a few people probably got into car wrecks from cellphone use, texting and driving was routine.
Anyone downvoting: talk to some teachers. Maybe start with junior high teachers and see if you can even stand moving up the grades. Your skin'll be crawling in no time.
If you don't share this view, you don't know what's going on. That's all there is to it.
