The mobile Data Tsunami initially described here is still growing at an astounding pace. According to Nielsen’s monthly analysis of cellphone bills for 65,000+ lines, smartphone owners – especially those with iPhones and Android devices — are consuming more data than ever before on a per-user basis. This has huge implications for carriers since the proportion of smartphone owners is also increasing dramatically. (Currently, 37% of all mobile subscribers in the United States have smartphones.)
Average U.S. Smartphone Data Usage Up 89% as Cost per MB Goes Down 46% | Nielsen Wire.