A survey says the text message boom is spreading to the over 35s.
It claims it is no longer just popular among teenagers.
Researchers say text message usage has grown by 10% since January.
Among 35 to 54-year-olds questioned text messaging increased by 20%. It also rose by 14% in the 55-64 and over 65 categories.
Management consulting firm AT Kearney and Cambridge University's Business School spoke to 2,400 mobile phone users in six countries.
Paul Collins, AT Kearney spokesman, said: "Having initially appealed as a cheap and handy communication tool for younger generations, SMS is now rapidly being adopted by adults.
"If you regard SMS as more than just a messaging route but as a commercial opportunity, then this trend presents significant opportunities for mobile providers, retailers and marketers."
The number of those questioned who say they would buy things using mobile phones is just 4%. In previous surveys the figure was 12%.