At my kid's public school in SF, there is one girl who lives the projects that was the first to have a cell phone, like 2nd or 3rd grade. And there are definite

At my kid's public school in SF, there is one girl who lives the projects that was the first to have a cell phone, like 2nd or 3rd grade. And there are definitely well-off parents who are pushing no phone (and no video games, in some cases) now in 4th grade, with some kids having a watch or phone as needed for club sports etc. But the divide is much less rich vs. poor and more about parental involvement (which has some obvious economic relation, but a stable home life seems more relevant). On the othe hand, I know some families at private schools and those kids seem much less regulated phone-wise.