SEOUL, South Korea (AP) - Samsung is replacing its mobile president at Samsung Electronics for the first time in six years.

SEOUL, South Korea (AP) Samsung is replacing its mobile president at Samsung Electronics for the first time in six years.

The Samsung Group conglomerate said Tuesday that Koh Dongjin was promoted to president and will replace Shin Jong-kyun as the head of the mobile business at its flagship company Samsung Electronics.

Samsung's smartphone lead has been dwindling as competition intensifies.

Shin will step away from day-to-day operations and focus on long-term strategies. He keeps his title of CEO of the IT and mobile division that encompasses phone, network and computer businesses.

Koh, an engineer, was an executive vice president leading mobile research and development.

Samsung says he led the development of two flagship smartphones released this year, the Galaxy S6 and Galaxy Note 5. He was also behind development of Samsung's mobile payments system.