In Northern Virginia schools, late '90s, cell-phones and pagers were banned[1] (not even allowed on campus) because they were perceived as tools for accomplishing drug-deals. I think that perception has definitely changed. We also had a half-dozen pay-phones in the school lobby for students to make calls if needed.

1: IIRC automatic suspension on first offense. Note, however, with most of the "zero tolerance" policies that were in place at the time, the offenses were significantly under-reported by the faculty.