Having a phone is an important part of participating in society like it or not. Not everyone has a happy home life of a home at all, and flatly banning anyone from owning a phone (purchased themselves) under 16 could further endanger young people already struggling in a dangerous situation. Or even just maintaining a job to survive.
Of course I don't want to live in a world where under 16s need to work, or need to discretely contact help, but we have to face reality. Let's fix that stuff rather than ban communication devices...
Aw that's too bad. That response I'm sure you're paraphrasing, but "that one doesn't follow the rules" is the best part of science.
It means our rules aren't good enough, or we don't understand that one well enough. Figuring it out can be an entire career of discovery. And the reasons why can be fascinating and inspiring to more discoveries!