We were only at 35% last May.  Now we’re at 46%.

Nearly half (46%) of American adults are smartphone owners as of February 2012, an increase of 11 percentage points over the 35% of Americans who owned a smartphone last May. Two in five adults (41%) own a cell phone that is not a smartphone, meaning that smartphone owners are now more prevalent within the overall population than owners of more basic mobile phones.

Also illuminating: 25% or Americans say they are now doing most of their Internet browsing on their phones instead of their computers.