The NPD Group has released a new smartphone report, finding that Motorola and HTC have driven Android to the lead in the U.S. Android is installed on one in three smartphones sold, according to the group. Meanwhile, for the first time since 2007, RIM has slid to the number 2 position, as Android took the lead. While Android accounted for 33% of all smartphones purchased in Q2, RIM accounted for 28%. Apple came in third at 22% with the launch of the iPhone 4.