Text the new way to use the cell phone

This artical talks about how yourger people are getting more cell phones, and we a nation are starting to become a cell phone nation. children as young as 11 and 12 are using the cell phone as the main phone in there house today.
Our age group (18-21) use our cell phone for 90 of our communication. Teenagers right now are "the sweet spot," says Burris of Sprint. An estimated 76% of kids ages 15 to 19 and 90% of people in their early 20s regularly use their cell phones for text messaging, ringtones and games, and that enthusiasm has turned wireless data services into a significant business. Gartner Research tion.
these stats are very awkward because most cell companys charge extra for text messaging, yet all these people in the poll claim that their monthly cell phone bill is between 60 and 70 dollars.http://www.time.com/time/magazine/article/0,9171,1042443-2,00.html