Most students have an 800 dollar computer in their pockets, why are they not using it?

As i walked around my classroom on the first day of school observing my students and going over classroom expectations I felt my phone buzz in my pocket.  More than likely this was just a notification or a text message, and I disregarded the moment.  Just at that moment I clicked to the next slide on my powerpoint that stated the school policy for cell phones "No cell phones used throughout the day except for lunch and before school begins." This prompted me to get out my cell phone and demonstrate for the class what this expectation meant, secretly knowing I could also check my notification at the same time. As I demonstrated, I saw my notification was from Archeology magazine, they had recently discovered a comb from 2500 years ago.  Awesome, I thought to myself. At this very moment I began to wonder why we weren't using these incredible devices in the classroom.  Out of curiosity I asked my students how many had smart phone devices in their pockets every student but one raised there hand.  Incredible I thought.  Incredible how all of us could be holding a 500-800$ tiny computer in our pocket that receives instant information and sends instant information but we are not aloud to use it until lunch.  Thomas Jefferson, one of the smartest men in American History, is said to have the most extensive library of our founding fathers, and had read most of his books.  Being in the 1700's I can't imagine his library was that extensive as wikipedia or simply google.  Yet, he wrote the declaration of independence and is considered an American hero.  My point is this, our students today have access to more information and a quicker rate then ever before. But we are not a loud to use it until lunch? After giving this some contemplation I asked myself what Jefferson would do? I came to the conclusion of Revolution.  That year in my class smart phones were used for almost everything from assessments, to learning, and feedback.  This revolution, much like Jeffersons, was successful and inspired other revolutions throughout campus.