comScore, a firm that measures the digital world, released data from the comScore MobiLens service, reporting key trends in the U.S. mobile phone industry during the three month period between October 2009 and January 2010.

The report found Motorola to be the top handset manufacturer overall with 22.9 percent market share, while RIM led among smartphone platforms with 43.0 percent market share.

OEM Market Share

In the 3 month average ending in January, 234 million Americans were mobile subscribers ages 13 and older, with device manufacturer Motorola ranking as the top OEM with 22.9 percent of U.S. mobile subscribers.

LG ranked second with 21.7 percent share, followed by Samsung (21.1 percent share), Nokia (9.1 percent share) and RIM (7.8 percent share).

Smartphone Platform Market Share

According to the report, 42.7 million people in the U.S. owned smartphones in an average month during the November to January period, up 18 percent from the August through October period.

RIM was the leading mobile smartphone platform in the U.S. with 43.0 percent share of U.S. smartphone subscribers, rising 1.7 percentage points versus three months earlier.

Apple ranked second with 25.1 percent share (up 0.3 percentage points), followed by Microsoft at 15.7 percent, Google at 7.1 percent (up 4.3 percentage points), and Palm at 5.7 percent. Google’s Android platform continues to see rapid gains in market share.

Mobile Content Usage

In an average month during the measured period, 63.5 percent of U.S. mobile subscribers used text messaging on their mobile device, up 1.5 percentage points versus three months prior.

Browsers were used by 28.6 percent of U.S. mobile subscribers (up 1.8 percentage points), while subscribers who played games made up 21.7 percent (up 0.4 percentage points).

Access of social networking sites or blogs experienced strong gains in the past three months, growing 3.3 percentage points to 17.1 percent of mobile subscribers, as the report shows.

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