in our area, most kids seem to be carrying iPhones by 4th grade. sad, but there it is.

My wife's a teacher. ~1/2 of the kids around here have smartphones by 2nd or 3rd grade, all but the children of "weirdos" (maybe 2-3%) have them by 5th. The schools don't make them leave them at home anymore like they did back when regular ol' dumb phones started to show up in kids' possession. Sometimes kids will be texting during class and it's their friggin' parents they're texting, as in, their parents contacted them during class. This is not as rare an occurrence as one might hope. Teachers can't confiscate them for practically any reason because most parents freak out if they do. No parental support for discipline basically = teachers can't do it (it's ineffective and a bigger headache than it's worth).

This at lower- to middle-middle class schools, not the rich ones. And we're deep in flyover country, not anywhere trendy.