We look at how the internet has evolved over time – from humble beginnings in 1972 when Cambridge computer scientist Ray Tomlinson introduced email, to the launch of the first iPhone in 2007 delivering the "internet in your pocket".

A few decades ago, landline phones were the primary form of quick communication between people. With the development of the internet came email, which took the place of many phone calls. From ARPANET to modern times, understand how email...