Teenage females lead the way, averaging 3,952 messages per month. (Males: 2,815.)
Although teenage females (does anyone still call them girls?) lead the way in texting, teenage males consume more data. Analyzing the monthly cell phone bills of roughly 65,000 mobile subscribers, Nielsen discovered that males age 13-17 took in 382 MB per month while their female counterparts used 266 MB.
Overall, mobile data usage among teens of both sexes was up 256% over last year and growing at a rate faster than any other age group. See chart below.
The full report is available here. It's is a companion to the State of the Media report Nielsen released earlier Thursday that showed the extent to which Google's (goog) Android and Apple's (aapl) iPhone dominate the U.S. smartphone market. See here.