I think nautil.us should write an article on positive effects of mobile phone connectivity. The snobs are looking down on that just like they are on video games.
The problem seems to be more about the constant stimuli that comes from internet enabled devices and video games. I grew up without access to much video games or the internet but that made me dream up entire fantasy worlds as a kid, because I was bored. I don't think the current environment allows kids that kind of space to just be bored and create things via imagination.
I'm not a child specialist though so I might be totally wrong about this.
For most of human history transportation through urban centers was done primarily on foot and roads were designed to facilitate that. Contemporary urban planning is designed around speedily moving motorized vehicles through and the streets, such as they are, are rivers of traffic that pedestrians have to hurry themselves across during the short windows of time that cars aren't speeding by.
The invention of the automobile has been terrible for letting kids roam around. On the flip-side of the dangers they face in urban centers, the ones growing up in newer suburban areas lack the density to have an appreciable amount of kids of similar ages within walking/biking distance of each other. Many older style, "streetcar" suburbs do, but we haven't build many of those in the past 30 or so years.
Recreate Lord of the Flies with GTAV? =)