Mobile phones are already surprisingly common in many parts of the developing world, and they, and the network of cables and transmitter masts that are needed to carry all that data, are spreading fast. The service in many places is still patchy and intermittent: people have to climb the nearest hill to get a signal. Many still have basic mobile phones that allow simple text messages and voice calls, rather than the latest smartphone with a colour screen and the latest gizmos. But both mobile phone services and the availability of smartphones are improving, and quickly.
出版物详细信息
- 已出版: 2017
- 出版者: CTA