17% of cell phone owners do most of their online browsing on their phone.
Crazy! A bit more math and we can determine, since 88% of U.S. adults own a cell phone, that 15% of American adults are using their phones, more than any other device, to browse the web. 88% is a significant increase even since April, when I pegged that same statistic at 83% in my Mobile Web Statistics article. This percentage is even larger for young Americans- 45% of 18-29 year olds who access the internet on their phones, compared with 31% for adults in general, use their phones for the majority of their web browsing. What does this mean? For web professionals, mobile should most definitely not be an afterthought. Yes, many people are using their phones as an additional web-capable device but, as these numbers reveal, tons of Americans are using their phones as their primary internet device. The landscape is changing- whether we're ready or not.