Stephen Fry meets the brains behind the mobile phone.
There are more mobile phones in the world than there are people on the planet: Stephen Fry talks to the backroom boys who made it all possible and hears how the technology succeeded, in ways that the geeks had not necessarily intended.
In this second episode, he traces the evolution of the mobile phone, from 'taxifones' and fax machines in cars to hefty executive bricks that required a separate briefcase to carry the battery.
Produced by Anna Buckley.