“ban phones in school” means a ton of different things. Nobody serious is advocating for kids to have their phones in class, which is an absurd idea. The debate is whether kids should have their phones at lunch and between classes and if their phones should be physically accessible in class. I can see plenty of good reasons to allow phones in passing periods and lunch, but I also understand just how disruptive they are in class and how enforcement could be toothless without physical backing.