I'm sorry, but there's a wildly huge difference between bubble gum/collectibles/comic books and internet connected cell phones.

I was terrible at paying attention in class, but I always made it through by hearing just enough to get by... until I was in my final year of college when some of the classes got internet connected desktops at every desk. In normal classes I'd be fine, but in the classes with a computer where I could IM with friends I failed miserably (literally went from straight A's to C's and a couple F's in college classes because of internet connected computers being in front of me all the time). And that was a desktop with only a couple friends I knew who also had IM on at the time. I can't imagine how poorly I would have done at school if every one of my friends had messaging on every minute of every day, not to mention mobile gaming and social media.