Introduction

Imagine you’re in the year 1876. The very first telephone call has just been made. You are there to witness it all, along with adoring crowds, soaking in the grand moment. Could you have imagined a day would soon come when almost every living soul on Earth would possess one of these ‘magical’ devices? Fast forwarding to today, that is exactly what has transpired. There are over 6.9 billion mobile phone users worldwide - in fact, more people own phones...