For the three-month average period ending in September, 234 million Americans age 13 and older used mobile devices. Device manufacturer Samsung ranked as the top original equipment manufacturer with 25.3% of U.S. mobile subscribers, followed by LG with 20.6% share and Motorola with 13.8 percent share, according to comScore (http://www.comscore.com), a company that "measures the digital world."

Apple strengthened its position at #4 with 10.2 % share of mobile subscribers (up 1.3 percentage points), while RIM rounded out the top five with 7.1% share. Apple's 10.2% is up from 8.9% for the three-month period ending in June.

Approximately 87.4 million people in the U.S. owned smartphones during the three months ending in September, up 12% from the preceding three month period, notes comScore. Google Android ranked as the top smartphone platform with 44.8% market share, up 4.6 percentage points from the prior three-month period.
Apple secured the #2 position, growing 0.8 percentage points to account for 27.4% of the smartphone market. RIM ranked third with 18.9% share, followed by Microsoft (5.6%) and Symbian (1.8 %).