Apple's U.S. share of smartphones grows to 33.4 percent

Apple's iPhone share of U.S. smartphone subscribers bumped upward 2 percentage points from May through July, giving it 33.4 percent of the market, online tracking and analytics firm comScore said.

The increase could be attributed to broad availability of the iPhone on several U.S. carriers and the availability of more affordable, older iPhone models, including the iPhone 3G S and iPhone 4. The iPhone's gain in market share was bigger than Android's improvement of 1.4 percentage points to 52.2 percent of the market in the U.S. Even so, both platforms are gaining subscribers. All other smartphone platforms declined in market share.