Over half of American adults now own a smartphone

From Pew Research:

Because 91% of the adult population now owns some kind of cell phone, that means that 56% of all American adults are now smartphone adopters. One third (35%) have some other kind of cell phone that is not a smartphone, and the remaining 9% of Americans do not own a cell phone at all.

* 2013 Smartphone ownership study | Full report (pewinternet.org)