Must-see for travelers to Korea! Prepare in advance for a comfortable communication experience! Recommended SIM card information


Korea is known as the birthplace of K-POP , as well as for its traditional culture and delicious food. Many tourists and business people visit Korea, and the communication environment there is an important factor that determines the success of their trip. This article provides detailed information on how to communicate smoothly in Korea.


Optimize your communications in Korea! Tips for choosing a SIM card

1. Communication speed and fee plans

Communication speed characteristics

In South Korea, 5G communication is widespread in major cities such as Seoul and Busan. This allows for very fast internet connection. 4G connection is also available in tourist areas and suburban areas, and there are almost no communication problems. However, communication may be unstable during peak times, events, and in some areas, so be sure to choose an appropriate data plan according to your schedule.

■How to choose a pricing plan

South Korean carriers offer a wide range of SIM card plans. Prices vary depending on the length of your stay, the number of days, and the amount of data you use, so it's important to choose the plan that best suits you.

■About roaming services

Japanese carriers also offer roaming services in Korea, but the fees can be expensive. If you want to comfortably enjoy social media and other features according to your travel plans, you should consider using a local SIM card.

2. SIM card size and type

■SIM card variations

There are various types of SIM cards, including standard SIM , micro SIM , nano SIM , and eSIM . It is important to choose the appropriate SIM card for the device you are using. In particular, the latest smartphones and tablets often support nano SIM and eSIM , so it is essential to check which SIM your device supports.

3. Purchase and activation procedures

Where to buy a SIM card

At Incheon International Airport and Gimpo International Airport in Seoul, South Korea, counters for each carrier are set up, where you can purchase a SIM card immediately after arriving. This is especially recommended for those visiting South Korea for the first time or those who want to set up a communication environment immediately. Also, if you want to purchase within the city, there are many stores and agencies for each carrier in commercial areas such as Myeongdong and Gangnam. You can purchase a SIM card or consult about plans while sightseeing or shopping.


Major Korean carriers and recommended SIM cards

SK Telecom SIM

SK Telecom , known as the largest carrier in Korea, provides high-quality communication services throughout the country. It is characterized by stable connections not only in urban areas but also in rural areas and remote tourist destinations. For tourists, there are various prepaid plans available that cover short-term and long-term stays, so users can choose according to their needs.

KT (Korea Telecom) SIM

KT is known as a carrier with extensive network coverage throughout South Korea. It is especially known for its high quality and stability of communication in major cities such as Seoul and Busan. KT 's strength is that it can be used comfortably not only for data communication in tourist areas and commercial districts, but also on the subway. VOYAGEE SIM offers this SIM .


LG U+ is a part of the LG Group that provides mobile communications and internet services. It is a carrier that is particularly focused on providing 5G communications in urban areas. It uses the latest technology to achieve ultra-fast data communications. It is also popular with tourists, and offers a wide range of plans, including those for short-term stays and those that allow you to make full use of 5G.

Important points to remember when using a SIM card in Korea

1. Gathering information before you arrive is key : Procuring a SIM card

Before you arrive in Korea, you can ensure a smooth communication environment by researching where to get a SIM card and the necessary documents (e.g. passport). Incheon International Airport and Gimpo International Airport have booths for the major carriers, where you can get a SIM card right away. There are also many stores scattered around the downtown areas of Myeongdong and Gangnam.

2. Traffic monitoring

It is expected that data consumption will increase due to watching K-POP videos and sharing them on social media . It is important to periodically check your usage and determine whether you need to add more data so that you do not exceed the data limit of your chosen plan.

3. Check device and SIM compatibility

The appropriate SIM card size varies depending on the smart device you use. It is recommended that you identify the SIM card size your device supports before considering a purchase in South Korea.

4. The right timing for activation

Korean SIM cards can take some time to be activated, so if you want to be able to use the phone as soon as you arrive, it's a good idea to check in advance the activation process and how long it will take.

5. Checking the SIM lock status and countermeasures

Some devices may be restricted to certain carriers. Before using a Korean SIM , verify that your device is not SIM -locked and, if necessary, proceed with the unlocking procedure. It is advisable to gather information in advance regarding unlocking, as it may cost money depending on the carrier.

" eSIM" is convenient for communicating while in Korea !

■ Reasons why we recommend traveling to Korea

In Korea, there are many opportunities to go out to popular tourist spots such as N Tower, Myeongdong, and Dongdaemun, as well as food stalls and night markets. Rather than carrying a WIFI router, you would like to minimize your luggage and enjoy various places. In recent years, the use of " eSIM" has increased in Korea. The big appeal is that you do not need to insert a physical SIM card, and you can set up a communication environment just by setting up the device hygienically. Especially for tourists and business people who travel frequently across countries, " eSIM" is a very convenient option that makes communication during your stay simpler and more efficient.

For more articles related to traveling to Korea, please see the blog below.

Korea feature article

The perfect eSIM for your stay in Korea is " VOYAGEESIM "


Click here for a list of products

You can use the plan for 3 days/5 days/7 days/10 days/20 days/30 days with unlimited data.

You can enjoy smooth data communication throughout Korea just by installing and setting up the eSIM you purchased without having to replace the SIM card you are using in Japan. Furthermore, since VOYAGE eSIM For Korea uses the network of KT , a major carrier in Korea, communication throughout Korea is very smooth and secure.


Korea is home to a wide variety of tourist destinations, including Gyeongbokgung Palace, Namsan Tower, and the Busan coastline. When visiting Korea, choosing the right communication method is extremely important. In particular, by preparing for communication before your trip, you can ensure a stable communication environment immediately after arriving. In this regard, an " eSIM " that is easy to set up is a very convenient option. In this article, we have explained in detail how to choose a SIM card or eSIM to optimize your communication in Korea. Please use this information to make the most of your trip to Korea.