I witnessed this start to happen, people not adults at the time do not understand. How fast it went from one family member having cell phones, to all of them. It was within two years, I started selling for Cingular/then Att when I was 19 at the time and from 2005 to 2007. I watched every single person get a cell phone, it was something we may not see again in our lifetimes. A huge social shift to handheld communications. I also saw a lot of concerts ofcourse at that time. You saw it go from lighters to phones in the same time.