[KT Olleh] Unlimited LTE Data Sim Card (1/5/10/20/30 days)

voucher Show Email Voucher
availability Fixed Date Ticket
cancellationpolicy Cancel 1 day prior (4PM KST) - 100% refund
Latest Update

Read our guide to find the perfect Sim card for you
:5 Things To Know Before Buying a Prepaid Sim Card in Korea


Prepaid SIM Card (Data Only)
✓ Choose from 1/5/10/20/30 days
✓ Full Speed Unlimited Sim Card
✓ Free incoming calls & texts

Operation Date/Time

- ICN Terminal 1
: 24 hours
- ICN Terminal 2
: 24 hours
- KT Office at Myeongdong
: 9am - 5pm (Weekday)


This unlimited data SIM card will make your travel even more fantastic! The same Olleh Simcard offered at cheaper than buying straight from Olleh (One of 3 big telecom companies in Korea). This sim card works for all kinds of devices. No need to stand in line filling in the paperwork to get your sim card after all that exhausting travel. Simply show your Email Voucher & passport to get your SIM CARD at the airport (Incheon airport, Gimpo airport, and Gimhae airport) or at the office near Myeongdong station.

✓ Unlimited Data
Choose the 24hours x DAY option for unlimited data. 

✓ Save time
Just show your Email Voucher and passport to the staff. We will send all the information needed to the booth in advance.

Important Information

Data only option
✓ 1 day plan (24-hour) : 
₩6,600 → ₩5,900 
✓ 5 days plan (120-hour): ₩27,500 → ₩24,750 
✓ 10 days plan (240-hour): ₩38,500 → 33,000 

✓ 20 days plan (480-hour): ₩60,500 → ₩54,450 

✓ 30 days plan (720-hour): ₩71,500 → 62,000 

✓ SIM Card with unlimited data (LTE)
✓ All types of SIM card (Nano, micro etc.)
✓ Free incoming calls & texts**
Outgoing Call & SMS
You may use Skype/WhatsApp/LINE/etc for phone call. Or book the option below.
✗ SMS from your original phone will be blocked when you install a new sim card.
✗ Please set APN if you can't use DATA

Booking Process

Before Booking: Read our guide to find the best Sim card for you

Step 1 - 
Choose pickup point, date, number of SIM card and proceed to checkout page to complete payment. 

Step 2 - 
Check your Email Voucher.

Step 3 - Show the email and your passport to redeem your SIM CARD.
            ✓ Please bring your passport and the Voucher to redeem your SIM CARD
            ✓ Please test the SIM CARD carefully before you leave the airport.

✓ You should pick up your SIM card yourself. No one else other than you can pick up the SIM card reserved under your name.

Things to Note

Activating your simcard
SIM card usage time starts counting as you redeem the SIM card at the ticket booth, NOT from the time you actually start using the data.
✓ If you want to activate it at a later time, you MUST inform staffs during pick up.  Please keep in mind that you will need to install the SIM card by yourself with this option.
✓ The SIM card is valid for 24 hours x DAY option.
e.g) If you install a 5-Day SIM card on May 1 at 15:30, it will expire on May 6 at 15:30.
✓  Please set APN if you can't use DATA

SIM card pick up at thr airport : Please note that starting from Apr 1,2023, if you DID NOT required to recharge voice & sms credits while pick up the SIM card, you will be able to have data + incoming voice & SMS services ONLY.
        ※ NO outgoing voice/SMS services during the whole valid period.
        ※ Might be unable to receive calls or SMS depends on your phone model.

Additional Info
✓ Date extension is NOT available
✓ If you've used a Korean SIM Card before on your phone, we need additional information to ensure that our SIM card will work on your phone. Please dial *#06# on your phone, and a chain of numbers will show up. Have this number ready when you book.
Top up for Data + Voice call + SMS option
You can top up on "roaming.kt.com". Manual will be provided during pick up.
*Top up is not possible once your sim card have been expired.

How To Go

*Please note that direct cash payment is NOT available for all pickup locations.
Payment needs to be fully complete to finalize your booking.

✓ Locations of KT (Olleh) Roaming Center/Office:

1. Incheon International Airport Terminal 1

[KT Olleh] Unlimited LTE Data Sim Card (1/5/10/20/30 days)
Next to GATE 10 (Arrival Hall, 1F) - 24 hours

2. Incheon International Airport Terminal 2

[KT Olleh] Unlimited LTE Data Sim Card (1/5/10/20/30 days)
Next to GATE 2,3 (Arrival Hall, 1F) - 24 hours

3. Myeongdong Station[KT Olleh]

[KT Olleh] Unlimited LTE Data Sim Card (1/5/10/20/30 days)
3-minute walk (approx. 100m) from Exit 10 - Weekday 09:00-17:00 (lunch time 12:00-13:00)

4. Gimpo airport [KT Olleh]

[KT Olleh] Unlimited LTE Data Sim Card (1/5/10/20/30 days)

1F Arrival Hall Gate 1 , Olleh KT Desk (365-day, 06:30-18:00)

5. Busan Gimhae airport [KT Olleh]

[KT Olleh] Unlimited LTE Data Sim Card (1/5/10/20/30 days)

1F Arrival Hall Gate 3 , Olleh KT Desk (365-day, 06:00-22:00)

Cancellation Policy

✓ 100% refundable until 1 day (by 4pm K.S.T.) prior to travel date.
✓ Not refundable after 4pm of 1 day prior to travel date. 


Read our guide to find the best Sim card for you 

1. Can one person book multiple SIM cards for friends and family?

Yes, 1 person can book up to 10 SIM cards, however, please note the SIM card usage time starts counting from the moment you pick up the SIM card from the airport.
If you would like to pick-up your SIM card then activate it at a later time, please choose the Myeongdong Office pick-up location. Please keep in mind that you will need to install the SIM card by yourself with this option.

2. I am using Samsung S6. Is it the right sim card for S6?

Yes, the SIM Card help desk will issue you a SIM card that fits your phone model type(nano, micro etc). They have different SIM cards for each different phone type. Price is same for all sizes. 

3. Can I extend the date?

Sorry, Date extension is not available.

4. Can I use the sim card with my wifi router?

The unlimited data SIM card can be used with your own portable wifi router. However, additional processing is required in order for the SIM card to work properly with wifi routers like changing the APN settings. These settings and functionality of each wifi router vary per device so the telecom staff cannot assist you with updating these settings. If you are able to setup the wifi router yourself after retrieval of the SIM card, then the SIM card can be used. If you are unsure how to process these changes, we do not recommend you purchase this SIM card for use with a wifi router.


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