Samsung Electronics Co. took second place in the U.S. smartphone market during the third quarter, trailing behind Taiwan-based HTC Corp., a market research firm said Wednesday. Even though Samsung became the leading smartphone maker worldwide, it lagged behind HTC in the world\'s biggest smartphone market in the July-September period, market researcher Canalys said in a report. HTC shipped 5.7 million smartphones to the United States in the latest quarter, claiming nearly a quarter of the market, compared with Samsung\'s 4.9 million units, the Palo Alto, California-based researcher said.