KT: One of Korea’s Major Telecom Providers
KT is one of South Korea’s major telecommunications companies, providing mobile, internet, TV, and other communication services. International visitors traveling in Korea can purchase or inquire about prepaid SIM cards at selected KT stores in Seoul as well as at airports. For travelers staying around Gangnam or exploring the Gangnam Station area, KT Plaza Gangnam is a convenient option because visitors can ask about SIM cards and mobile services without returning to the airport. KT also provides prepaid mobile plans for international customers, including options that can be activated with a passport.
• One of South Korea’s major telecom providers
• Mobile, internet, and TV services available
• Prepaid mobile plans for international customers
• Passport-based registration available for eligible foreign prepaid services
• SIM card consultation available in the Gangnam area
Buy a SIM Card at KT Plaza Gangnam with Your Passport
If you need mobile data and calling services while traveling in Korea, KT Plaza Gangnam is a useful place to ask about SIM card purchase and activation. International tourists should bring their passport when visiting the store. Before purchasing a SIM card, it is also recommended to confirm that your smartphone is unlocked and compatible with Korean mobile networks. KT offers prepaid options for short-term visitors, including travelers entering Korea for tourism or business purposes.
• International visitors should bring a passport
• Prepaid SIM card consultation is available
• Check whether your smartphone is carrier-unlocked
• Confirm compatibility with Korean mobile networks
• Short-term visitors can ask about prepaid mobile plans
English Support for International Travelers
Understanding mobile plan conditions, data allowances, activation procedures, and additional charges can be difficult for travelers who do not speak Korean. According to the provided store information, KT Plaza Gangnam offers English support, making it easier for international visitors to ask questions about SIM cards, prepaid plans, and other mobile services. This can be especially helpful for travelers purchasing a Korean SIM card for the first time.
• English consultation available
• Support for international SIM card activation inquiries
• Assistance understanding plan and data allowances
• Mobile service consultation available
• Convenient for travelers who do not speak Korean
KT Prepaid SIM Card Prices for International Visitors
When visiting KT Plaza Gangnam for a SIM card, travelers should compare not only the SIM card itself but also the included data, voice calls, text messages, and post-data speed. KT’s LTE Welcome Prepaid plans are designed for international users and are generally offered in 30-day packages. The options below reflect the prepaid plan information previously provided, while actual products, promotions, and availability at the store may vary at the time of your visit.
• Welcome 1 Prepaid: KRW 35,000 for 30 days / 1GB of base data
• Welcome 3 Prepaid: KRW 45,000 for 30 days / 3GB of base data
• Welcome 5 Prepaid: KRW 55,000 for 30 days / 5GB of base data
• 200 minutes of voice calls included with each listed plan
• 200 text messages included
• Data can continue at a limited speed after the base allowance is used
• Listed prices include VAT
• Available products and conditions should be reconfirmed at the store
According to the plan information, after the included high-speed data is used, Welcome 1 can continue at speeds of up to 1Mbps, Welcome 3 at up to 3Mbps, and Welcome 5 at up to 5Mbps. Travelers visiting KT Plaza Gangnam should confirm the latest conditions before activation because telecom plans and promotions can change.
KT Prepaid Plans for Short-Term Tourists
For travelers who are staying in Korea only temporarily, a prepaid SIM can be simpler than signing up for a long-term postpaid contract. KT provides Welcome Prepaid options designed for international visitors traveling for tourism or business. At KT Plaza Gangnam, travelers can ask which plan best matches their length of stay and expected data usage before completing activation.
• Suitable for short-term visitors to Korea
• Useful for tourism and business travel
• Prepaid format without a long-term mobile contract
• Choose a plan according to stay duration and data needs
• Bring your passport for activation inquiries
What to Check on Your Phone Before Buying a SIM Card
Purchasing a Korean SIM card does not automatically mean that every overseas smartphone will work without issues. Before visiting KT Plaza Gangnam, check whether your phone accepts physical SIM cards, whether it is carrier-unlocked, and whether its network bands are compatible with Korean mobile networks. Smartphones purchased overseas can differ by model and region, so checking compatibility in advance may help prevent activation problems.
• Confirm that your phone is carrier-unlocked
• Check whether the phone supports a physical SIM card
• Confirm compatibility with Korean mobile networks
• Know your exact smartphone model
• A restart may be required after activation
Should You Choose an eSIM or a Physical SIM?
KT provides both physical SIM options and eSIM services for eligible international travelers. If your smartphone supports eSIM, you may be able to register mobile service digitally without physically replacing the SIM card. However, eSIM support differs by device model, and the best option can also depend on whether you need voice calls and text messaging in addition to mobile data. Travelers can ask KT Plaza Gangnam which option is suitable for their device and trip.
• Physical SIM: Insert a physical SIM card into the smartphone
• eSIM: Activate mobile service digitally on a compatible device
• Check whether your smartphone supports eSIM
• Confirm whether you need data only or voice and messaging as well
• Choose an option based on your travel period
KT Plaza Gangnam Location and Transportation
KT Plaza Gangnam is located on Teheran-ro in Gangnam-gu, Seoul, within walking distance of Gangnam Station. The store address is 1F, Sanggyeong Building, 120 Teheran-ro, Gangnam-gu, Seoul. It is approximately 205 meters from Gangnam Station Exit 1, making the store convenient for international travelers staying, shopping, or sightseeing around Gangnam.
• Address: 1F, Sanggyeong Building, 120 Teheran-ro, Gangnam-gu, Seoul
• Nearest station: Gangnam Station
• Recommended exit: Gangnam Station Exit 1
• Approximately 205 meters from Exit 1
• Located toward the Kukkiwon Intersection area
• Easy walking access from central Gangnam
KT Plaza Gangnam Opening Hours
KT Plaza Gangnam is open on weekdays and Saturdays and is regularly closed on Sundays according to the provided store information. Weekday hours are 9:00 AM to 8:00 PM, while Saturday hours are 10:00 AM to 8:00 PM. Public holidays and special holiday periods may affect operating hours, so travelers with a tight schedule should check the latest opening status before visiting.
• Monday: 09:00–20:00
• Tuesday: 09:00–20:00
• Wednesday: 09:00–20:00
• Thursday: 09:00–20:00
• Friday: 09:00–20:00
• Saturday: 10:00–20:00
• Sunday: Regularly closed
• September 25, 2026: Chuseok holiday closure listed
• Hours may change on public holidays or according to store schedules
Why Buying a SIM Card in Gangnam Can Be Convenient
Gangnam Station is one of Seoul’s major transportation and commercial hubs, served by Seoul Subway Line 2 and the Shinbundang Line. International visitors staying in Gangnam, Yeoksam, or Sinnonhyeon may find KT Plaza Gangnam convenient if they did not purchase a SIM card at the airport. Because the store is close to the subway station and English support is available according to the provided information, travelers can combine a store visit with sightseeing, shopping, dining, or other activities in Gangnam.
• Convenient for travelers staying near Gangnam Station
• Easy access by subway
• Useful if you did not buy a SIM card at the airport
• English support available
• Passport-based prepaid service consultation available
What to Prepare Before Visiting
To make SIM card purchase and activation smoother at KT Plaza Gangnam, bring your passport and the smartphone you plan to use in Korea. It is also useful to know how long you will stay in Korea and approximately how much mobile data you expect to use. Heavy data users should compare the included high-speed data allowance and the speed available after the base data is exhausted. If you need Korean voice calls or text messages, confirm that those features are included in the selected plan.
• Bring your passport
• Bring the smartphone you will use in Korea
• Confirm that the phone is carrier-unlocked
• Check the length of your stay in Korea
• Decide approximately how much data you need
• Confirm whether you need voice calls and text messages
• Check the latest plans and promotions when visiting KT Plaza Gangnam
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