It seems like the "guiding parent" style is acceptable to you.

And yes, a phone - and the web and computing in general - are information weapons. Same as a knife or a hammer they have utility too which is great and also something to be lauded. But dangers must be recognised.

I won't trust Apple or Google to draw the line in the sand for me. Both the kid and myself will know what the expectations are and be talking about it the whole way through growing up.