How to Buy a SIM Card in Korea: 5 Ways for Tourists in 2026
You can buy a Korean SIM card at the airport immediately after landing, at convenience stores throughout Seoul and other cities, from mobile carrier shops, or order one online for pickup or delivery. Tourist SIM cards are prepaid, do not require a Korean phone number or bank account, and work in unlocked phones that accept standard or nano SIM sizes. Most offer 4G or 5G data with limited or unlimited plans, and some include a small amount of voice calling. This guide covers where to buy, what documents you need, typical price ranges, activation steps, and the differences between airport kiosks, convenience stores, carrier shops, and online vendors so you can choose the option that fits your arrival time and budget.
- Passport required
- You must show your passport to buy and activate any prepaid tourist SIM card in Korea
- Typical price range
- Roughly 15,000-55,000 KRW for 5-30 days of data, depending on the carrier, data allowance, and where you buy
- Airport availability
- SIM card kiosks and vending machines open 24 hours at Incheon Airport arrivals; Gimpo has limited hours
- Phone compatibility
- Your phone must be unlocked and support Korean LTE/5G bands; most recent iPhones and Samsung models work
- eSIM alternative
- Many carriers now offer eSIM plans you activate via QR code, no physical card needed if your phone supports eSIM
- Buying a SIM card at the airport
- Buying a SIM card at convenience stores
- Buying from a mobile carrier shop
- Ordering a SIM card online for pickup or delivery
- eSIM as an alternative to physical SIM cards
- What documents and phone requirements you need
- Typical data plans, validity periods and speed limits
- Where to buy a Korean SIM card: comparison of options for tourists
- Practical tips
- Frequently asked questions
Buying a SIM card at the airport
Incheon International Airport (인천국제공항) has the widest selection of tourist SIM card vendors. After you clear customs and enter the arrivals hall in Terminal 1 or Terminal 2, you will see kiosks from KT, SK Telecom, and LG U+ near the exit gates, typically between Gates 4 and 6 in Terminal 1 and Gates 1 and 3 in Terminal 2. These kiosks are staffed during peak hours, roughly 7 a.m. to 10 p.m., and some have 24-hour vending machines that accept credit cards. Staff speak English and will activate the SIM for you on the spot. You hand over your passport, choose a plan, pay, and they insert and test the SIM in your phone. The entire process takes about five to ten minutes if there is no queue. Prices at the airport are typically 20,000-50,000 KRW for plans ranging from 5 days with 1-3 GB per day to 30 days with 10-30 GB total or unlimited data at reduced speeds after a daily threshold. Airport prices are slightly higher than buying in the city, but the convenience and immediate activation are worth it for most travellers who need data for maps and transport apps as soon as they leave the airport. Gimpo International Airport (김포국제공항), which handles domestic flights and some short-haul international routes, has fewer vendors and shorter operating hours, usually 9 a.m. to 7 p.m., so if you are landing late or early, Incheon is more reliable. If you are arriving at a regional airport such as Busan Gimhae or Jeju, SIM card availability is inconsistent; check online or plan to buy in the city instead.
Buying a SIM card at convenience stores
Convenience stores such as CU, GS25 (GS25), 7-Eleven (세븐일레븐) and Emart24 (이마트24) sell prepaid tourist SIM cards in sealed packaging. These are typically located near the register or in a dedicated mobile accessories section. The cards are sold inactive; you must activate them yourself by following the instructions in the package, which are printed in English, Chinese and Japanese. Activation usually requires scanning a QR code or visiting a carrier website, entering the SIM card number and your passport details, and waiting a few minutes for the network to connect. Not all convenience store staff are trained to help with activation, and English assistance varies, so this option works best if you are comfortable following written instructions or can use a translation app. Prices at convenience stores are often 10-20 percent lower than at the airport, typically 15,000-40,000 KRW for similar data allowances. The main carriers sold in convenience stores are KT, SK Telecom and LG U+, along with reseller brands such as Freet and KTM Mobile, which use the same networks but offer cheaper plans with smaller data caps or slower speeds. Convenience stores are everywhere in Seoul, Busan, and other cities, and most are open 24 hours, so you can buy a SIM at any time. The downside is that activation is not guaranteed on the spot, and if you have trouble, you may need to visit a carrier shop for help. If you arrive late at night and the airport kiosks are closed, buying a SIM at a convenience store near your accommodation and activating it in your hotel is a practical backup.
Buying from a mobile carrier shop
KT, SK Telecom and LG U+ operate branded retail shops in major districts such as Myeongdong (명동), Hongdae (홍대), Gangnam (강남), Insadong (인사동), and near large stations including Seoul Station (서울역), Busan Station (부산역) and Dongdaemun (동대문). These shops are not convenience stores; they are dedicated mobile phone retailers with staff trained to assist tourists. You can walk in, show your passport, choose a prepaid tourist plan, and have the SIM activated and tested in your phone before you leave. Prices are similar to airport kiosks, typically 20,000-50,000 KRW, but you may find promotional plans or bundles that include extra data or voice minutes. Carrier shops are useful if you have a problem with a SIM bought elsewhere, such as no signal or failed activation, because staff can diagnose compatibility issues, check your phone's unlock status, and swap the SIM if it is defective. Shops are generally open from 10 a.m. to 8 or 9 p.m. and closed on Sundays or public holidays, so check ahead. The main advantage is human support in English; the disadvantage is that you need to travel to a shop location, which may not be convenient if you are staying outside central Seoul or arriving late in the evening. Some travellers prefer to buy a cheap starter SIM at the airport and then visit a carrier shop later to switch to a better long-term plan if they are staying more than two weeks.
Ordering a SIM card online for pickup or delivery
Several Korean and international vendors sell tourist SIM cards online that you can collect at the airport or have delivered to your hotel. Klook, KKday, and Trazy are popular third-party platforms that offer KT, SK Telecom and LG U+ prepaid SIMs with English booking interfaces and customer support. You pay online before your trip, receive a voucher by email, and exchange the voucher for the SIM at a designated airport counter or hotel concierge. Prices are comparable to buying directly at the airport, often 18,000-45,000 KRW, and sometimes include a small discount for booking in advance. Airport pickup counters are usually in the arrivals hall near Gates 5 or 6 in Incheon Terminal 1 and Gate 3 in Terminal 2, and you show your passport and voucher to collect the SIM. Delivery to your hotel is also available but typically adds 3,000-5,000 KRW and requires at least one day's notice, so it is only practical if you are arriving late and can wait until the next day for mobile data. The main benefit of ordering online is guaranteed stock, English support, and clear refund policies if your travel plans change. The downside is less flexibility; if your flight is delayed or you arrive earlier than expected, you may miss the pickup window, and not all hotels accept SIM card deliveries for guests who have not yet checked in. Online ordering works well for travellers who want to lock in a specific data plan and avoid decision-making at the airport when tired.
eSIM as an alternative to physical SIM cards
If your phone supports eSIM technology, you can buy and activate a Korean data plan without handling a physical SIM card. eSIM is available from KT, SK Telecom, LG U+, and international providers such as Airalo, Nomad, and Ubigi. You purchase the plan online, receive a QR code by email, scan it with your phone's camera, and the eSIM profile downloads and activates automatically. This process takes about five minutes and works as soon as you land if you have airport Wi-Fi access. Prices for eSIM plans are similar to physical SIMs, roughly 15,000-50,000 KRW for 5-30 days and 1-30 GB of data, depending on the provider. eSIM is convenient because you keep your home SIM card in the phone and switch between your home number and the Korean data plan in your phone's settings, so you can still receive SMS verification codes or calls on your original number. The main limitation is phone compatibility; eSIM works on iPhone XS and later, Google Pixel 3 and later, and recent Samsung Galaxy models, but not on all Android phones, especially budget or older devices. Check your phone's specifications before you travel. Another consideration is that eSIM plans are data-only; they do not include a Korean phone number for voice calls or SMS, so if you need to call hotels, restaurants or local contacts, you must use internet-based apps such as KakaoTalk, WhatsApp or Skype. For most tourists who rely on maps, translation apps and messaging, data-only eSIM is sufficient, but if you expect to make traditional phone calls, a physical SIM with a voice allowance is more practical.
What documents and phone requirements you need
Every prepaid SIM card and eSIM purchase in Korea requires a valid passport for identity verification and registration under local telecommunications law. You cannot buy or activate a SIM with just a driver's licence or photocopy; the vendor will scan or photograph your passport data page. Your phone must be unlocked, meaning it is not locked to a specific carrier in your home country. If you bought your phone directly from Apple, Samsung or another manufacturer, it is probably unlocked, but if you got it through a carrier contract or payment plan, check with your carrier before you travel. To test if your phone is unlocked, try inserting a different carrier's SIM at home; if it connects, your phone is unlocked. Korean networks use LTE bands 1, 3, 5, 7, 8 and 5G bands n78 and n79, which are supported by most recent iPhones, Samsung Galaxy, Google Pixel, and other international flagship models. Older phones, especially those made before 2018 or sold only in North America, may not support all bands and could have slower speeds or limited coverage outside Seoul. If you are unsure, check your phone's technical specifications on the manufacturer's website or ask the SIM vendor at the airport before purchasing; they can test compatibility on the spot. Physical SIM cards in Korea are available in standard, micro and nano sizes, and most vendors provide a triple-cut SIM that you snap to the size you need. Nano is the most common size for phones made after 2015. If you are buying online or at a vending machine, confirm the SIM size in advance to avoid mismatch.
Typical data plans, validity periods and speed limits
Tourist SIM cards are sold with fixed validity periods, most commonly 5, 10, 15 or 30 days, starting from the moment of activation, not from the date of purchase. If you activate a 10-day SIM on your arrival date, it expires 10 days later at midnight, and you cannot extend it without buying a new SIM or top-up voucher. Data plans fall into three categories: fixed daily allowances, such as 1 GB or 3 GB per day with unlimited data at reduced speeds after the cap; total data allowances, such as 10 GB or 30 GB for the entire validity period; and unlimited data with a fair-use threshold, typically 1-3 GB per day at full 4G or 5G speeds, then throttled to roughly 1-5 Mbps for the rest of the day. Throttled speeds are fast enough for messaging, maps and web browsing but may struggle with video streaming or large downloads. If you plan to use data-intensive apps such as YouTube, Netflix or video calls, choose a plan with higher daily caps or total data. Voice calling is included in some tourist SIMs, usually 30-60 minutes of local calls to Korean numbers, and unlimited incoming calls. SMS is often limited or excluded; check the plan details. If you need to call home internationally, use internet-based services such as WhatsApp, FaceTime or Skype instead, which count against your data allowance but are far cheaper than international voice minutes. Most tourist SIMs also include free incoming calls, so if someone in Korea needs to reach you, you can share your temporary Korean number without cost.
Where to buy a Korean SIM card: comparison of options for tourists
| Purchase location | Typical price range (KRW) | Activation support | Availability |
|---|---|---|---|
| Incheon Airport kiosks | 20,000-50,000 | Staff activate on the spot in English | 24-hour vending machines; staffed 7 a.m.-10 p.m. |
| Convenience stores (CU, GS25, 7-Eleven) | 15,000-40,000 | Self-activation; English instructions in package | 24 hours, locations throughout cities |
| Carrier shops (KT, SK, LG U+) | 20,000-50,000 | Full staff support and troubleshooting | 10 a.m.-8 p.m., closed some Sundays |
| Online (Klook, KKday, Trazy) | 18,000-45,000 | Airport pickup or hotel delivery with voucher | Pre-order required; pickup counters open 7 a.m.-10 p.m. |
| eSIM (Airalo, Nomad, Ubigi) | 15,000-50,000 | QR code activation; data-only plans | Instant online purchase and activation |
Practical tips
Frequently asked questions
Before you go
Buying a SIM card in Korea is straightforward once you know where to go and what documents to bring. If you want immediate activation and English support, buy at the Incheon Airport kiosks when you land. If you prefer to save 10-20 percent and are comfortable with self-activation, buy at a convenience store near your accommodation. If you have an eSIM-compatible phone and want to keep your home number active, order an eSIM online before you travel. Whichever option you choose, bring your passport, confirm your phone is unlocked, and test that data and calling work before you leave the vendor. With a working SIM and Naver Map or KakaoMap installed, you will be able to navigate Seoul, book transport, translate signs, and stay connected throughout your trip.
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