Luke Wroblewski:
From the number of smartphone users in the United States to native mobile app use, the fifty percent line is approaching or already crossed.
Horace Dediu previously estimated that mobile penetration in the U.S. would reach 50% by the end of September 2012. Wroblewski compiles several metrics to show that the milestone is well on pace, if not ahead of schedule.
It seems the main limiting factors on growth in the U.S. will be economics or sparsity of broadband mobile data. Even then, imagine the mobile industry in another year or two. It won’t be long before most people are using smartphones and accessing a majority of their data in a mobile environment.