David Kirkpatrick writes:

Despite the fact that more than two billion people worldwide already have cellphones, everyone agreed the growth opportunities are massive. "Most people are still not connected," said Padmasree Warrior, CTO of Motorola.

The design challenges to reach the unconnected are great, she said. "The next billion are in China and India and places like that. And many of them can't type or even read."
...
Kamal Qadir is CEO of CellBazaar, a Bangladeshi company which operates an online Craigslist-like buying-and-selling service that rural businesspeople access exclusively over mobile phones. His company charges nothing for the service, making its money by sharing the revenues that cell carrier Grameen Telecom, the country's largest, gets from carrying the calls.

3:38:24 PM