SEOUL - Samsung Electronics, the world's second-largest mobile phone maker, said Monday it sold more than 1 million units of Galaxy S2 smartphone to South Korean mobile carriers.

The number of Galaxy S2 sold to domestic mobile operators topped 1 million units just in one month, Samsung said in a statement. The tech firm has launched the smartphone on April 29.

The previous millionseller phone sold at the fastest pace was Galaxy S, which took 70 days to hit 1 million units in sales.

Unlike the Galaxy S, which was released solely by the country's top wireless carrier, SK Telecom, the Galaxy S2 has been sold by all three carriers, including KT and LG Uplus.