comScore today released data from the comScore MobiLens service, reporting key trends in the U.S. mobile phone industry during the three month average period ending July 2010 compared to the preceding three-month average.

The report ranked the leading mobile original equipment manufacturers (OEMs) and smartphone operating system (OS) platforms in the U.S. according to their share current mobile subscribers age 13 and older, and reviewed the most popular activities and content accessed via the subscriber?s primary mobile phone. The July report found Samsung to be the top handset manufacturer overall with 23.1 percent market share, while RIM led among smartphone platforms with 39.9 percent market share.

For the 3 month average period ending in July, 234 million Americans ages 13 and older used mobile devices. Device manufacturer Samsung ranked as the top OEM with 23.1 percent of U.S. mobile subscribers, up one percentage point from the preceding three month period. LG ranked second with 21.2 percent share, followed by Motorola (19.8 percent share), RIM (9.0 percent share, up 0.6 percentage points) and Nokia (7.8 percent share).

53.4 million people in the U.S. owned smartphones during the three months ending in July, up 11 percent from the corresponding April period. RIM was the leading mobile smartphone platform in the U.S. with 39.3 percent share of U.S. smartphone subscribers, followed by Apple with 23.8 percent share. Google saw significant growth during the period, rising 5.0 percentage points to capture 17.0 percent of smartphone subscribers. Microsoft accounted for 11.8 percent of Smartphone subscribers, while Palm rounded out the top five with 4.9 percent. Despite losing share to Google Android, most smartphone platforms continue to gain subscribers as the smartphone market overall continues to grow.

Mobile Content Usage

In July, 2 out of 3 U.S. mobile subscribers used text messaging on their mobile device, up 1.4 percentage points versus the prior three month period, while browsers were used by 33.6 percent of U.S. mobile subscribers (up 2.5 percentage points). Subscribers who used downloaded applications comprised 31.4 percent of the mobile audience, representing an increase of 1.6 percentage points from the previous period. Accessing of social networking sites or blogs increased 1.9 percentage points, representing 21.8 percent of mobile subscribers.