We have kids 12 and under and the rule is after EVERYTHING is completed (school to chores) with good attitude they can each have an hour to play electronics.
That does not go towards family tv or entertainment time (I like movies too 🙂
I think every family will have a different set up, not exact answer, but growing up we had a computer and my siblings and I played games on it, so I don’t have a problem with electronics, but in limited amounts, just not over doing it.
My kids do not have smart phones or social media accounts so it is pretty easy at this time. I know things will change as they get older, but I also want them to learn to practice self control too, and that takes practice.