At World Mobile Congress, Smart Technologies Promise to Change Lives

We are in the midst of a mobile tech revolution that promises to change the way we live, say industry experts at this week's Mobile World Congress (MWC) in Barcelona, Spain, where ‘Internet of Things’ and superfast 5G technologies are all the rage. But even the most basic mobile technology is changing lives in some of the world's most remote parts. Henry Ridgwell reports from London.