According to The New York Times, by May 2010 people were using their cell phones more for text messaging and data-processing than for speech. This should not come as a surprise to anyone with teen-age children.
". . . although almost 90 percent of households in the United States now have a cellphone, the growth in voice minutes used by consumers has stagnated, according to government and industry data.
"This is true even though more households each year are disconnecting their landlines in favor of cellphones.
"Instead of talking on their cellphones, people are making use of all the extras that iPhones, BlackBerrys and other smartphones were also designed to do — browse the Web, listen to music, watch television, play games and send e-mail and text messages.
"The number of text messages sent per user increased by nearly 50 percent nationwide last year, according to the CTIA, the wireless industry association. And for the first time in the United States, the amount of data in text, e-mail messages, streaming video, music and other services on mobile devices in 2009 surpassed the amount of voice data in cellphone calls, industry executives and analysts say. 'Originally, talking was the only cellphone application,' said Dan Hesse, chief executive of Sprint Nextel. 'But now it’s less than half of the traffic on mobile networks.'
"Of course, talking on the cellphone isn’t disappearing entirely. 'Anytime something is sensitive or is something I don’t want to be forwarded, I pick up the phone rather than put it into a tweet or a text,' said Kristen Kulinowski, a 41-year-old chemistry teacher in Houston. And calling is cheaper than ever because of fierce competition among rival wireless networks.
"But figures from the CTIA show that over the last two years, the average number of voice minutes per user in the United States has fallen (http://www.nytimes.com/2010/05/14/technology/personaltech/14talk.html?hp, accessed 05-14-2010).