The report shows that mobile technology is becoming the most desirable means of communication -- especially in poor countries. The numbers show dramatic growth: By the end of 2008, there were an estimated 4.1 billion subscriptions globally, compared with roughly 1 billion in 2002, according to the International Telecommunication Union, one of the specialized agencies of the United Nations.
The study also looked at the Internet, and found that worldwide, usage has more than doubled: Approximately 23 percent of the population uses the Internet, up from 11 percent in 2002. Still, poor countries are far less likely to surf the Net. For example, only 1 in 20 people in Africa went online in 2007.