SIM Card
You need a KOREAN SIM CARD when you arrive in Korea
Although Korea is widely known for its excellent wifi coverage, since it would be your first time visiting Korea, we highly suggest you buy a sim card in order to navigate your way around Korea and to keep in contact with your designated ISV during emergencies.
Also, almost every monetary transaction or online personal identification requires a Korean mobile phone number. If you wish to use such services, we highly suggest you buy yourself a Korean SIM card ASAP to avoid any hassle.
Ways to buy a SIM card
Only buy SIM cards that also support domestic calls & texts along with data
Online Purchase (before departure)
you can order a SIM card online and receive them at a designated booth at Incheon Airport
Klook, KKday, Trazy (Trazy is available for pick up before immigration)
please only sign up for services that allow you to receive the SIM cards at Incheon Airport
Purchase on the spot (at various mobile carrier booths at Incheon Airport)
1st floor of Terminal 1, Gate number 10 ~11
1st floor of Terminal 2, Gate 2~3
open 24 hours
there are also booths located at the immigration/quarantine section before baggage claims where you can buy SIM cards on the spot
Others
SIM cards that you can pick up at your home country's airport or delivered directly to your accommodation
We highly suggest you obtain a SIM card BEFORE you leave the airport to keep in contact with your ISV in case of emergencies