Android continues to gain share over Apple in the smartphone segment, according comScore’s MobiLens service, which reports mobile numbers for the three-month period ending August 2011. The study shows 43.7 percent of smartphone users are on an Android device, while 27.3 percent were on an iOS-based device.

Samsung maintained its position as the top mobile OEM overall, with 25.3 percent of U.S. mobile subscribers, followed by LG with 21 percent share and Motorola with 14 percent share. Apple strengthened its position as No. 4, with 9.8 percent share of mobile subscribers (up 1.1 percentage points), while Research In Motion (RIM) rounded out the top five with 7.1 percent share.

According to the report, fully 70 percent of U.S. mobile subscribers used text messaging on their mobile device in August, up 1 percentage point from the previous period. Browsers were used by 42.1 percent of subscribers (up 2.3 percentage points), while downloaded applications were used by 41.6 percent (up 3 percentage points).

Additionally, accessing of social networking sites or blogs from a mobile device increased 2.3 percentage points to 30.9 percent of mobile subscribers. Game-playing was done by 28.5 percent of the mobile audience (up 1.6 percentage points), while 20.7 percent listened to music on their phones (up 2.1 percentage points).