Samsung has sold more than 5 million units of the popular Galaxy S II smartphone in South Korea. The milestone was reached just five months after the phone's launch. In October, Samsung announced that it was . Variants of the phone are currently on AT & T, Sprint and T-Mobile in the U.S., even though Samsung has not revealed sales figures for the device here. Samsung also said South Korea's market share of 53% for the year 2011, according SammyHub . The cell phone manufacturer is revealing exhibition in Barcelona next month, and we will live to bring you all the news as it breaks.