(Some children walk, some cycle, and others take the regular busses and trams, depending on the distance involved. In our case the child has to walk a few hundred meters, and not cross any roads at all, so it's an easy walk for him.)
Because school finishes around 2pm we've just recently given him a phone so he can say "I'm going to play outside", "I'm coming [to the empty] home", or "I'm going to friend XXX for a couple of hours". It isn't a proper smartphone, but it does allow more than an old-school Nokia.
We've generally allowed 30 minutes of "screen time" a day, sometimes that has been watching selected youtube videos, sometimes playing Super Mario Bros on the nintendo, and sometimes it has been watching TV. I expect the dynamic will change a little more now, but not hugely.
Parental controls will be setup to allow more access between 1pm and 6pm, but I expect that we'll not allow access in the mornings or "late" at night, just to ensure there's not too much obsessive use.
When/If the child can route around the parental controls I think we'll "reward" that creativity with more access. Need to encourage the hacker-mindset :)