Imagine the day, where no cell phone works in the world?

It's easy as some of us are old enough to remember a time before mobile phones! Public transport was completely silent, meetings and lectures were not interrupted by absurd ringing tones and people could only be reached when they were at their main base. It is only the last 10 years that mobiles have become part of everyday life - so you only need by over 25 to remember life before them.