I know it would complicate things a lot, but are we sure it's smartphones and not social media / "not educational" websites being the issue?
If I had a phone with calendar and a to do list, when at school, I might have fared better.
If I had a phone with calendar and a to do list, when at school, I might have fared better.
Enforcement will likely come down to don't do stupid shit with your phone or risk losing it. Ignoring class for a phone is stupid shit regardless of what's on the screen.