Samsung’s days as the king of the smartphone market are numbered if it can’t reverse its shrinking sales. It’s obvious that the strategies that helped earn that position are no longer working, and the company’s leadership has either not adapted to the changing market, or changed in a way that does more harm than good, neither of which are going to make its sales numbers any better. That’s why Samsung has decided to change up the leadership of its mobile division, with Dongjin Koh now serving as the head of the division. Koh is responsible for developing the well-received Galaxy Note 5 and Galaxy S6 series, as well as leading Samsung’s mobile research and development department, so there’s a good chance that he’ll be able to turn things around.