ComScore (www.comscore.com), a company that “measures the digital world,” has released data from the comScore MobiLens service, reporting key trends in the U.S. mobile phone industry during the three month average period ending in August.

The study surveyed more than 30,000 U.S. mobile subscribers and found Samsung to be the top handset manufacturer overall with 25.7% market share. Google Android led among smartphone platforms, accounting for 52.6% of smartphone subscribers, while Apple accounted for 34.3%.

However, Google Android ranked as the top smartphone platform with 52.6% market share (up 1.7 percentage points), while Appleā€™s share increased 2.4 percentage points to 34.3%. RIM ranked third with 8.3% share, followed by Microsoft (3.6%) and Symbian (0.7%). ComScore says 116.5 million people in the U.S. owned smartphones during the three months ending in August, up 6% versus May.