That’s a lot of texting
According to the Kaiser Family Foundation, kids in grades 7 through 12 spend an average of 1:35 (an hour and 35 minutes) per day sending or receiving text messages. That's more texting than I've done in my entire life, but then the average time that the same kids spend on social networking sites (22 minutes per day) is also more than I've ever spent texting.
On the other hand, I've probably spent more time writing assembly language than they'll ever do. And I still prefer it to texting.