New comScore data on mobile usage shows the number of smart phones continues to grow rapidly, increasing 12% from June of 2011 to 87.4 million in Sept. of 2011, and that the Android platforms continues to grain market share, hitting 44.8%.
The data, which shows a three-month average for the period ending Sept. 30 and is based on a survey of over 30,000 U.S. mobile subscribers by the comScore MobiLens service.
That survey also found that Samsung was the largest handset supplier in the U.S. with 25.3% of U.S. mobile subscribers, followed by LG (20.6%), Motorola (13.8%), Apple (10.2%) and RIM (7.1%).
Overall, about 234 million Americans aged 13 and older used mobile devices.
The Google Android platform saw its market share increase from 40.2% to 44.8%, while the Apple platform grew from 26.6% to 27.4% in the September figures. RIM ranked third with 18.9% share, followed by Microsoft (5.6%) and Symbian (1.8%).