These laws - as I see it - are primarily about framing. No, they won't stop parents from buying smartphones for their kids. But just as with seat belts or smok

These laws - as I see it - are primarily about framing. No, they won't stop parents from buying smartphones for their kids. But just as with seat belts or smoking indoors, they will frame giving one to a kid as harmful. This will give lawfully inclined people a reason to pay attention and - through the appliance of social pressure - nudge other people into compliance.