kt Global Stores If you are staying for 90 or more days in Korea, Start Here If you are staying less than 90 days in Korea, Start Here From IP television to high-speed internet, you can always stay touch with your loved ones, and the world around you.
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Exploring the kt Expat Blog

Sure there is a lot of information on the web, but what good is it if you can't read it?  The kt Expat Blog has information on different kt services, rate plans, locations of Global Stores, things you need to prepare, and much, much more.


What makes KT special?

We understand that it can sometimes be difficult to get the service you need in a foreign country, especially when there is a language barrier.

Click the big main image in the middle to find out the many services and ways you can get in touch with us, in a language that is more comfortable for you. 




How to Navigate Around the kt Expat Blog



The site is separated into 4 main sections:  



kt Global Stores

Perhaps Korean isn't your strongest language, and you'd rather talk to someone in your own language.  

Visit one of kt's Global Stores, where you can get service in other languages, such as English, Chinese, Japanese, and even German! 

Whether you are looking to subscribe to a new line of service, or get help with the service you already have, consultants who speak a variety of foreign languages are available to help you.

Go here to find directions, phone numbers, and what languages are supported at each Global Store.


Short-Term Residents

Here you will find information tailored to visitors to Korea who will be staying fewer than 90 days, or for those who make multiple trips to Korea throughout the year, including prepaid services, and international calling rates.


Long-Term Residents

Here you will find information tailored to visitors who will be staying in Korea longer than 90 days, including the most popular postpaid rate plans and services, as well as many discount and membership programs.


Customer Support

Questions about your service?  Phone in need of repair?  Go here to find some of the ways you can get the support you need.




Olleh Mobile Service Guidebook

The one and only multilingual guide to telecommunication services in Korea, the “Olleh Mobile Service Guidebook” contains all the information on our most asked for services, including rate plans, discount programs, membership options, and a breakdown of how the “installment program” and “discount programs” work.  Available as a convenient PDF download, you can get the information in Korean, English, Japanese, and/or Chinese.  All of the information is matched by page number, to help you point out what you need, even if you aren’t able to make it to one of our Global Stores.


Order Online, the “olleh shop”

With a selection of our most popular devices, now you can order the mobile service you need online, fill out the required paperwork, and have it shipped right to your door, all from the comfort of your home.


News and Helpful Information

Keep up with a selection of the latest press releases and news on kt’s new services, such as how to save on roaming costs, and where to go when your iPhone is in need of repair.



Twitter  -  @olleh_expats



Have a quick question?  Want to give a suggestion?  Send us a tweet! Whether you're in Korea, roaming in another country, or even if you haven't arrived in Korea yet, get the answers you need by shooting us a message at @olleh_expats.



=== Frequently Asked Questions (FAQs) ===

Q. Can I buy a prepaid SIM card for my phone?

A. Yes.  In Korea, SIM cards are issued with activation of a line of service, meaning that SIM cards are issued at kt retailers nationwide.  If you aren’t able to speak Korean, you can visit one of our many “kt Global Stores” ( http://expatblog.kt.com/176 ), to have your service activated.  Depending on the location, you can find a store that can assist you in activating your service in English, Chinese, Japanese, and even German.


In order to activate your service, you will need to have the following:


*  An unlocked, WCDMA 2100mHz compatible phone

*  An Alien Registration Card or passport


Important Note:  Because of a restriction by the Korean Immigration Service, customers are able to activate prepaid service only after 3 days have passed since their entry into Korea.  This means that if you were to arrive in Korea on the 10th, you will be able to activate your prepaid service on the 14th.



Q. How do I check the remaining balance on my prepaid line?

A. You can check your prepaid balance by calling 1500 (toll-free from your kt mobile phone).



Q. Can I use a phone that I brought from home?  Do I need to register it?

A. As long as it supports WCDMA on the 2100mHz frequency, and it is unlocked, it should work on the KT network.  There used to a registration process 



Q. I heard that Korea uses CDMA, does that mean my phone wont work?

A. In the era of 2nd generation mobile phones, aka. “2G”, Korea used the CDMA technology for mobile communications.  However, KT has since launched WCDMA (“3G”, different from CDMA) service, which means that phones on this standard are compatible with various 3G carriers throughout the world. 



Q. Will my GSM iPhone work in Korea?

A. There is a bit of confusion regarding the term “GSM”.

“GSM”, like “CDMA”, is a 2G standard of data communications.  They are incompatible with each other, meaning that a GSM phone will not work on a CDMA network, and vice versa.

“WCDMA”, which is different from “CDMA”, is an evolution of the “GSM” standard.


The iPhone 3G, iPhone 3GS, iPhone 4 (non-Verizon model), and the iPhone 4S (all models) are actually “WCDMA” phones, even though they are commonly called “GSM iPhones” because they also support GSM.

This means that iPhone 3G, iPhone 3GS, iPhone 4 (non-Verizon model), and the iPhone 4S (all models), will work without issue on the KT network.



Q. What does it mean for my phone to be “unlocked”? How do I know if my phone is unlocked?  Can KT unlock my phone for me?

A. The term “locked” or “unlocked” refer to whether or not a phone is “locked” for use only with the carrier it was bought on.  This means if your phone is “locked” to the carrier you bought it on, you cannot use it on KT, or any other carrier’s network.  (The phone will not accept our SIM cards.)  The easiest way to know if your phone is locked is to try another carrier’s SIM card in your phone, or to call your carrier and ask.

To “unlock” a phone means that a carrier has removed this restriction, and the phone can be used with other carriers, including KT.  By nature of the process, only the carrier who sold the phone can unlock it, meaning that unfortunately, KT cannot unlock phones that are locked to another carrier.



Q. What is a “membership card”?

A. A membership card is a special benefit that we provide as a “thank you” to our customers.  KT’s membership program, “olleh club”, is a card that you can use to get discounts at many member retailers.

You can find more information and sign up for olleh club easily by visiting http://expatblog.kt.com/70 or by visiting a kt Global Store ( http://expatblog.kt.com/176 ) or kt retailer near you. 



Q. How do pricing, installment plans and discounts get calculated?  How much will I pay per month?

A. Click here for a detailed walkthrough of how pricing is calculated for phones in Korea:   http://expatblog.kt.com/5



Q. How do I get help with subscription, service, and billing issues?

A. You can reach us through the following channels:


For general questions regarding your service and billing:


Foreign Language Customer Service Center

1583 (Toll-free from a kt mobile phone) or (02) 2190-1180

Hours of Operation:  Monday-Friday, 9:00 AM~7:00 PM, Korean Standard Time.

Languages Offered:  English, Japanese, Mandarin Chinese, Korean


KT Global Stores

Location Information Here:  http://expatblog.kt.com/176



Reporting a lost or stolen mobile phone


Foreign Language Customer Service Center

From within Korea: 1583 (Toll-free from a kt mobile phone) or (02) 2190-1180

From outside of Korea:  +82-2-2190-1180

Hours of Operation:  Monday-Friday, 9:00 AM~7:00 PM, Korean Standard Time.

Languages Offered:  English, Japanese, Mandarin Chinese, Korean



If outside of Foreign Language Customer Service Center operating hours:

From within Korea: (02) 2190-0901 (Korean-language support only)

From outside of Korea: +82-2-2190-0901 (Korean-language support only)






Questions about your service?

Mobile Services: Call 1583
(Toll-free from a kt mobile phone)
or (02) 2190-1180

Home Services: Call 1588-8448

For other ways to get customer service, click here.

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KT Corporation, CEO Lee Suk-chae. Business registration number: 102-81-42945, 2002-경기성남-0048.

ADDRESS: 90 Buljeong-ro (206 Jungja-dong), Bundang-gu, Seongnam-city, 463-711 Korea. TEL: 82-2-2190-1180

Copyright (C)2012 KT Corporation. All rights reserved.