How to use: For an eSIM, check whether your phone supports it and is carrier-unlocked. Compare each plan’s validity period, activation timing, speeds after the data allowance is used up, tethering, and call and text features. Check passport verification procedures too. KT’s official visitor eSIM guide requires an unlocked phone and matching passport information, and sets out different terms for data-only plans and plans that support calls.
Jeju Local Information
SIM, eSIM and Wi-Fi in Jeju: Connectivity Guide for International Travelers
Official SIM pickup points for the 3 mobile carriers (SKT·KT·LG U+) have not been confirmed in the international terminal at Jeju Airport. We recommend preparing an eSIM before arriving in Jeju. Check device compatibility and carrier lock status. You can also use free airport Wi-Fi and visit mobile carrier stores in town for assistance.
Where to connect: Before connecting to free Wi-Fi at Jeju Airport, check the network listed by Korea Airports Corporation. The network name in the official guide is ‘Jeju_Airport Free Wi-Fi’. Do not assume airport Wi-Fi will cover your data needs throughout your trip. Arrange a separate connectivity plan for your accommodation in Jeju City or Seogwipo and for travel to outlying areas.
Important: Having a Korean phone number does not mean you can verify your identity for every Korean service. For example, KT’s official visitor eSIM guide explicitly states that identity verification is not supported. Before ordering a physical SIM or pocket Wi-Fi, check pickup and return locations in Jeju. Do not assume airport mobile service counters are always open. Follow the product’s terms for deletion after installation, reissuance and cancellation.
Can I buy a SIM card on arrival at Jeju Airport’s international terminal?
No official SIM pickup point for the three mobile operators has currently been confirmed in Jeju Airport’s international area. To avoid being without internet immediately after arrival, we recommend buying and setting up an eSIM online before departure.
Locations: 2
Goodmorning Ido Store
jejuteukbyeoljachido jejusi seungcheonro 75 hanyangbilding 1cheung
Sources: goodmorningtelecom.com · tworldfriends.co.kr · Checked:
Goodmorning New Town Store
jejuteukbyeoljachido jejusi 1100ro 3334 (nohyeongdong, donghyeonbilding)
Sources: goodmorningtelecom.com · Checked:
Should I choose a physical SIM or an eSIM in Jeju?
Choose based on your phone’s eSIM support and carrier lock status, and the data and calling features you need. If your device does not support eSIM, check for a compatible physical SIM or another way to stay connected.
Can I pick up a SIM card or pocket Wi-Fi at Jeju Airport?
No official SKT, KT or LG U+ SIM pickup counters have been confirmed in the international terminal at Jeju Airport. Prepare an eSIM before arriving in Jeju. For a physical SIM or pocket Wi-Fi, choose a product that explicitly offers pickup and return in Jeju.
Is free Wi-Fi available at Jeju Airport?
Korea Airports Corporation lists free Wi-Fi at Jeju Airport under the network name ‘Jeju_Airport Free Wi-Fi’. Check where you can connect and follow the on-site instructions. Arrange a separate data connection for use while traveling.
If my travel eSIM includes a Korean phone number, can I use it for identity verification?
Having a phone number does not mean the plan supports identity verification for Korean services. Some products, such as KT visitor eSIMs, do not support identity verification. Check both the requirements of the service you want to use and the terms of your plan.
What should I do if my eSIM will not connect?
Check the installation and activation timing, data line settings, carrier lock status and the plan’s coverage area. Follow the seller’s official support instructions. Deleting your eSIM may limit your ability to reinstall it, so contact support before deleting it.