On Thursday, comScore published new data from the comScore MobiLens service for the three month average period ending in February 2013.
As of late February, 133.7 million people in the U.S. owned smartphones, which represents 57% market penetration.
Since November 2012, smartphone ownership in the United States has grown 8%. And judging by today’s update from comScore, Apple was the chief beneficiary of that growth.
While’s Google’s Android once again ranked as the top smartphone platform with 51.7 percent market share, that lead fell by 2% since the last three-month period comScore analyzed.
By the close of February, Apple’s share increased by 3.9%, securing a 38.9% total market share.
Falling well behind iOS and Android are BlackBerry (5.4% market share), Microsoft (3.2% market share), and Symbian (0.5% market share).
To read the full report from comScore, click here.