Sales of smart tech devices are soaring as the traditional PC declines. Observer writers look at their impact, which is already helping children to learn, spreading literacy, improving healthcare, boosting harvests in Africa – and making the web giants sit up
West Africa’s technological revolution driven by mobile phones
Whether it’s tracking locusts or government spending, west Africa’s hi-tech firms are finding new solutions to social problems
iPhone 5 – review
With features including Siri, turn-by-turn navigation, new maps, a panoramic camera, 4G, restore to iCloud and a new digital dock, the iPhone 5 has it all – and it is ahead of the competition again