Even if you bring your smartphone from your country, sometimes it doesn’t work in Korea despite the fact that you registered for international roaming service in your country before departure. Plus, for those who intend to use international roming service, the fee is pretty high.
For your convinience, we recommend to get great service at Incheon International Airport that might save your money. Once you’re arrived in Korea, turn on your cellphone and check if you have any problem with using mobile service in Korea. If it doesn’t work at all or you would like to use unlimited wifi connection in Korea, you can rent cellphone or portable hotspot router at Incheon International Airport.
You can find more about this service in following link: