The former Samsung VP must love a challenge. As Bloomberg noted, authorities raided Apple's offices in Seoul before iPhone X's launch last year to ask questions about its business practices. The tech giant could also face sanctions in the country for requiring local carriers to foot its advertising bills. While Apple is having a tough time in Samsung's home turf, Yoon didn't jump into a sinking ship. Apple's sales in the country went up by 3.3 percent in the last quarter of 2017 (while Samsung's went down) compared to the year before. It recently opened its first official store in Seoul's swanky Gangnam area, as well.