© Darren Hauck/AP Photo
Jeremy Rankin works on a cell phone at his work, Go Wireless.
In June 2001, wireless phone users sent 30 million text messages in the United States, according to the Cellular Telecommunications and Internet Association, an industry trade organization. By June 2002, that number had increased to nearly 1 billion.
The method is most popular among teenagers, according to Upoc Inc., a New York-based firm that helps users of mobile devices share information on everything from the rapper Bow Wow to celebrity sightings. Those teenagers, hampered by limited space and the difficulty of writing words on numeric phone keypads, have helped create the text-messaging lingo.