Poor countries have already bene†ted hugely from mobile phones. Now get ready for a second round...

Also in this special report:

Eureka moments: How a luxury item became a tool of global
development.

The mother of invention: Network operators in the poor world are cutting costs and increasing access in innovative ways.

Up, up and Huawei: China has made huge strides in network
equipment.

Beyond voice: New uses for mobile phones could launch
another wave of development.

Finishing the job: Mobile-phone access will soon be universal.The next task is to do the same for the
internet.