The number of Americans who are smartphone owners now stands at 46%, an 11-point increase since last May. Smartphone owners now outnumber the 41% of adults who own a cellphone that is not a smartphone.

As smartphone ownership has grown over the last year, there has been a corresponding shift in the specific types of phones that Americans report owning:

• Android devices are used by 20% of cell owners, up from 15% in May 2011
• iPhones are used by 19% of cell owners, up from 10% in May 2011
• Blackberries are used by 6% of cell owners, down from 10% in May 2011

Read the full report, including details on smartphone ownership across demographic groups.