So what would parents suggest? I'm 40, so got a phone at 17. I had rubbish internet in my teens, and anyway, didn't really 'discover' it. So I've never grew up

So what would parents suggest? I'm 40, so got a phone at 17. I had rubbish internet in my teens, and anyway, didn't really 'discover' it. So I've never grew up in the connected world. My eldest is now 7. It seems to me secondary school is about the age for a mobile. And at this point its basically supervised education