Stay Connected with KT Olleh: Korea’s Best Travel SIM Card (2024)

Discover Seoul, Busan, and Jeju with KT, formerly KT Olleh, Korea’s major telco offering SIM cards for 3, 5, 10, 20, or 30 days! Get one at a discounted price here 🇰🇷

In a nutshell

• Why book KT’s SIM card in Korea? KT (formerly KT Olleh) is one of the major telcos in Korea that offers reliable internet connection, calls, and texts for 3-30 days. Check them out on Klook here or on GetYourGuide here.
• How much for a KT SIM card? Book one here starting at around $13 —inclusive of unlimited data! 👍🏻
• Where do I redeem? Pick-up for the Korea SIM card by KT is available at Incheon International Airport or Gimpo International Airport. Check the redemption hours and location here.
• Is it worth booking? Absolutely — but don’t just take our word for it! Here’s a review from a satisfied traveler: “I have been to South Korea multiple times, and this has always been my [SIM card]. On all those trips, the mobile data is always fast and reliable. No need to configure anything. Just insert it to your phone and you’re good to go. Highly recommended!” Check out all more reviews for KT’s Korea SIM card here.
• Does KT also offer an eSIM or pocket WiFi in Korea? Yes! If you want to book a fast and reliable pocket WiFi, rent this option. You can also choose to book the more modern and easy-to-install Korea eSIM from KT 💯

Book a KT Olleh SIM Card in Korea

If you’re flying into South Korea, we recommend getting a SIM card that is powered by KT (formerly KT Olleh), one of the country’s major telcos. KT’s SIM cards provide fast and reliable data connection, flexibility in terms of SIM plan configuration, as well as calls and text. Here are your booking options:

1. 4G/5G KT Korea SIM Card (3 Days)

• PRICE: Book here starting at only $13.3!
• INCLUSIONS: Unlimited data, validity period of 3 days, mobile hotspot, & nationwide coverage by KT Corp.
• REDEMPTION. Pick up this KT SIM card at any of the following:
  • 1/F Gate 10-11(E), KT Roaming Center, Incheon International Airport Terminal 1: Open 24/7
  • 1/F Gate 6-7, KT Roaming Center, Incheon International Airport Terminal 1: Open between 06:00 AM – 10:00 PM
  • 1/F Gate 2-3, KT Roaming Center, Incheon International Airport Terminal 2: Open 24/7
  • 1/F Gate 1, KT Roaming Center, Gimpo International Airport: 06:30 AM – 11:00 PM
• BEST REVIEW: “Easy to redeem and network was great with no lagging even when we were at Nami Island or Alpaca World. Hotspot is also possible with no network lagging. Recommended for those staying 10 days as it fully made me connected throughout my trip,” reads a review for the KT SIM card for 3 days.

2. 4G/5G KT Korea SIM Card (5 Days)

• PRICE: Book here starting at only $18!
• INCLUSIONS: Unlimited data, validity period of 5 days, optional call & text services, mobile hotspot, & nationwide coverage by KT Corp.
• REDEMPTION. Pick up this KT SIM card at any of the following:
  • 1/F Gate 10-11(E), KT Roaming Center, Incheon International Airport Terminal 1: Open 24/7
  • 1/F Gate 6-7, KT Roaming Center, Incheon International Airport Terminal 1: Open between 06:00 AM – 10:00 PM
  • 1/F Gate 2-3, KT Roaming Center, Incheon International Airport Terminal 2: Open 24/7
  • 1/F Gate 1, KT Roaming Center, Gimpo International Airport: 06:30 AM – 11:00 PM
• BEST REVIEW: “Hassle free experience redeeming the SIM card via the counter. Having data is essential if you are going around via free and easy as a lot of navigations will be expected, would highly recommend purchasing this if you a heavy user of data.”

3. 4G/5G KT Korea SIM Card (10 Days)

• PRICE: Book here starting at only $25.6!
• INCLUSIONS: Unlimited data, validity period of 10 days, optional call & text services, mobile hotspot, & nationwide coverage by KT Corp.
• REDEMPTION. Pick up this KT SIM card at any of the following:
  • 1/F Gate 10-11(E), KT Roaming Center, Incheon International Airport Terminal 1: Open 24/7
  • 1/F Gate 6-7, KT Roaming Center, Incheon International Airport Terminal 1: Open between 06:00 AM – 10:00 PM
  • 1/F Gate 2-3, KT Roaming Center, Incheon International Airport Terminal 2: Open 24/7
  • 1/F Gate 1, KT Roaming Center, Gimpo International Airport: 06:30 AM – 11:00 PM
• BEST REVIEW: “[Would] highly recommend! Pick-up at the airport, 10 days of unlimited data, no downtime. No need to change anything in the settings, just restart the phone and it’s already ready to use.”

4. 4G/5G KT Korea SIM Card (20 Days)

• PRICE: Book here starting at only $40.2!
• INCLUSIONS: Unlimited data, validity period of 20 days, optional call & text services, mobile hotspot, & nationwide coverage by KT Corp.
• REDEMPTION. Pick up this KT SIM card at any of the following:
  • 1/F Gate 10-11(E), KT Roaming Center, Incheon International Airport Terminal 1: Open 24/7
  • 1/F Gate 6-7, KT Roaming Center, Incheon International Airport Terminal 1: Open between 06:00 AM – 10:00 PM
  • 1/F Gate 2-3, KT Roaming Center, Incheon International Airport Terminal 2: Open 24/7
  • 1/F Gate 1, KT Roaming Center, Gimpo International Airport: 06:30 AM – 11:00 PM
• BEST REVIEW: “Easy to redeem at Incheon International Airport terminal 1. Fast internet connection and easy to use just insert the sim and restart the phone and you’re ready to go.”

5. 4G/5G KT Korea SIM Card (30 Days)

• PRICE: Book here starting at only $47.5!
• INCLUSIONS: Unlimited data, validity period of 30 days, optional call & text services, mobile hotspot, & nationwide coverage by KT Corp.
• REDEMPTION. Pick up this KT SIM card at any of the following:
  • 1/F Gate 10-11(E), KT Roaming Center, Incheon International Airport Terminal 1: Open 24/7
  • 1/F Gate 6-7, KT Roaming Center, Incheon International Airport Terminal 1: Open between 06:00 AM – 10:00 PM
  • 1/F Gate 2-3, KT Roaming Center, Incheon International Airport Terminal 2: Open 24/7
  • 1/F Gate 1, KT Roaming Center, Gimpo International Airport: 06:30 AM – 11:00 PM
• BEST REVIEW:

“Works really well! The signal coverage is very good and connection was quick. Getting this is recommended instead of the pocket wifi especially if you’re not yet familiar with South Korea just in case you get lost in touch with your travel companion. This way you can easily communicate with each other. It’s also easy to claim in the airport, you just have to show your booking and passport. They also explained clearly how to use the sim, although it comes with manual as well. There’s also a sim card slot opener included which is really great,” reads a review for this long-term KT SIM card in Korea.

How to Book a KT SIM Card in Korea on Klook

1. Click here to go to the KT Olleh SIM card booking page.
2. Select the date, plan, and inclusions.
3. Check out.
4. Receive your instant mobile voucher.
5. Pick up your Korea card on the selected date.

How to Use the KT SIM Card in Korea

• Make sure that your mobile phone is unlocked to use the KT prepaid SIM card in South Korea. Contact your provider in your home country to have your phone unlocked before using this SIM card.
• KT’s SIM card in Korea can be used with WCDMA devices.
• The KT Korea SIM card may not work with some devices due to different models and/or frequency bands
• If, after the installation, the KT SIM card is not recognized, just turn your phone off and turn it back on after 5-10 minutes.
• If you have already previously used another SIM card in Korea, you may not be able to activate the card.

Is the Korea SIM Card by KT Olleh worth booking? Here are more reviews!

With an excellent star rating of 4.8/5 and over 100k+ bookings, it’s safe to say that the KT SIM card in Korea is the most preferred option by travelers! Check out this review on Reddit:

KT. It was extremely reliable during my trip. Even worked flawlessly underground in the subway. Easy activation and easy to use. I pre ordered mine and collected at the airport on arrival.

Another review for the Korea SIM card by KT on GetYourGuide reads: ”I was very happy with my choice of provider and never had any problems!”

Last Update: July 8, 2024