School isn't just about academic study, it's also where you make friends and learn how to interact with others.
I think mobile phones get in the way of this by enabling kids to just communicate within already established cliques?
Trust me, they already do that for the most part.
But, I can look back and be grateful there were no smartphones to hide behind, otherwise there are some hang-ups I might never have gotten over.
But something that would allow me to hide a bit in elementary scool would be welcome. I did not learned anything about communication when forced into those situations, I was just lonely and miserable.
Growing up with 3 sisters and learning at an early age what mental cruelty is.