Am I wrong for thinking it sounds really antisocial for girls to have sleepover and then play on their phones? When I have a kid I really don't want them to be exposed to mindless consumption but it sadly seems like it's not going to be possible unless they're home schooled. At the very least, they're getting a very locked down smart phone.
I did that (as a boy) back in the day too. Pack up the PC and bring it over to a friend. Even when playing single player games we still had the experience of being immediately together, able to talk directly and freely, and able to show/help each other stuff. I suppose that's just the modern version of that.
I think of the Pewdiepie episode of South Park where Ike and his friends each have their own device and each consumes their own media separately when I think of kids having sleepovers now.