Samsung has been also dominating rivals LG Electronics and Pantech in the South Korean market, and holds 53 percent based on its internal statistics.
As of June 1, the Korean firm said it had sold 24 million Galaxy Ss, and 28 million Galaxy S2s.
The firm?s recently released flagship smartphone, the Galaxy S3, went on sale Tuesday and is also showing signs of becoming a certified hit.
In related news, Samsung has acquired Nanoradio, a Swedish company that develops Wi-Fi chipsets for smartphones, tablets, mobile gaming terminals, portable multimedia players, digital cameras and e-readers.
The acquisition would allow Samsung integrate Nanoradio's technology into its own chipsets mnaking them more power efficient.
Samsung did not unveil financial details of the deal.