I strongly disagree. Option one is just giving up on trying to improve the situation in our schools. You're not listening here. "Not caring" as you put it either is or should be neglect in terms of performing their job and thus grounds for dismissal. Then you'll say "but no one wants to teach anyway, there's a shortage as is" and I'll say that yeah, that's another more important issue, that teachers need better working conditions and pay.

That there exists more important issues to fix doesn't mean that banning phones isn't a good idea, it just means that there are prerequisites before it would actually work "in the real world" as you put it.