Samsung’s lead over Apple in the smartphone market continues to increase, as does its lead over Nokia in the global cellphone market, according a Reuters poll. While the South Korean manufacturer has been neck-and-neck with the iPhone-maker for several quarters, the launch of the Galaxy S III may have helped Samsung gain a more commanding lead. The company is believed to have sold 50 million smartphones this past quarter, compared to an estimated 30.5 million iPhones. “Samsung is expected to be the smartphone hero in the second quarter,” said IDC analyst Francisco Jeronimo. “We are also expecting to see the biggest smartphone volumes ever shipped from one single vendor in one quarter, driven by strong demand of the Galaxy portfolio, particularly the Galaxy S II and S III.” Samsung is also estimated to have sold 15.7 million more mobile phones than Nokia in the second quarter of this year, an increase from its 3.4 million unit lead in the first quarter of 2012.