When I was a kid, my teachers didn't need to worry about students having phones because they weren't around. As I went through middle and high school, the only thing teachers needed to worry about was phones ringing or some kids playing snake (best game ever!!). A few friends of mine were lucky enough to get to text but not me! Anyway, now phones in the classroom are an ongoing battle that most 3-12 grade teachers need to deal with (sometimes I miss the simpler days).
I chose to focus on Nokia because they were the first phones I had. The Nokia 252 was my first cell phone and man did I think I was cool when I changed the face...have I mentioned snake??
Here is the history of Nokia phones:
All images were taken from Google...the final image can be seen larger here.