Chang Dong-hoon will remain executive vice president but will focus more on his role as the head of the design strategy team, which oversees the company's long-term design strategy across all of its products.
"The realignment enables Executive Vice President Dong-Hoon Chang to focus more on his role as Head of Design Strategy Team, the company's corporate design center which is responsible for long-term design strategy across all of the Samsung Electronics' businesses, including Mobile Communications," Samsung said in a statement to CNET.
Lee is one of the company's youngest senior executives at 42, and is credited with designing the Galaxy series of phones, which made Samsung a world leader in smartphones. Lee started his Samsung career in the 1990s as a car designer for the company's failed partnership with Renault.
The recent Galaxy S5 received a disappointed response from users, with many saying it was the same as the Galaxy S4, with only a few minor hardware and software tweaks.