Whatever Imperial Japan built in Korea, they weren't certainly smartphone factories. The Imperial Japan didn't really build a lot of industrial base in Korea

Whatever Imperial Japan built in Korea, they weren't certainly smartphone factories. The Imperial Japan didn't really build a lot of industrial base in Korea and what little they built were in the North and destroyed during the Korean civil war. Also remember that most Korean forced laborers were forced to work in mines and factories on the ground level, not weren't brought in to develop their products or run their businesses.