Samsung Sales Top Apple's iPhone by 20 Million Units

Samsung is expected to have sold 50 million smartphones in the second quarter, compared to just 30.5. million iPhones sold by Apple

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According to

, Samsung's lead is heavily attributed to the Galaxy S III, the company's most popular phone. The South Korean device maker's strong results are expected to

. "Samsung is expected to be the smartphone hero in the second quarter," IDC analyst Francisco Jeronimo told Reuters. "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."