Where and How to Buy a SIM or eSIM in Korea (2025 Guide)
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Why You Need a SIM or eSIM in Korea
Staying connected in Korea is essential for a smooth travel experience. Whether you’re navigating the subway, using mobile payment apps, translating signs, or simply staying in touch, mobile data is key. Public Wi-Fi may be slow, limited, or require Korean number verification — which is why most travelers opt for a prepaid SIM or eSIM right after arrival.
Where to Buy a SIM or eSIM in Korea
At the Airport (Most Convenient)
Incheon International Airport (ICN)
Terminal 1: Near Exits 6 and 10
Terminal 2: Near Exits 2 and 6
Telecom booths from SKT, KT, and LG U+ are clearly marked and offer multilingual support.
Gimpo Airport (GMP)
A smaller airport with at least one SIM booth near the exit after baggage claim.
What to Bring:
– Passport
– Unlocked smartphone
Operating Hours:
Most airport booths are open from 6:00 a.m. to 10:00 p.m.; some operate 24/7.
In the City
- Carrier Stores: Available throughout Seoul (e.g., Myeongdong, Gangnam, Dongdaemun)
- Convenience Stores: Some GS25, CU, and 7-Eleven locations sell SIMs, but setup support is usually limited
- SIM Vending Machines: Found in select subway stations and hotels with multilingual instructions
Online Pre-Booking
- Book via telecom websites or travel platforms like Klook or Trazy
- Choose airport pickup or hotel delivery
- eSIMs can be activated instantly — a great option for tech-savvy travelers
SIM vs. eSIM: What’s the Best Fit?
SIM Card: Physical card inserted into your phone — widely supported and easy to use
eSIM: Digital SIM activated via QR code — ideal if you want to keep your home SIM active while traveling
Compare Major Carriers: SKT, KT, LG U+
| Feature | SK Telecom (SKT) | KT | LG U+ |
|---|---|---|---|
| Coverage | Best for rural & nationwide | Excellent in cities | Strong nationwide |
| 4G/5G Speed | Fast LTE, some 5G | Excellent 5G | Good 5G in metro areas |
| Tethering | Allowed | Allowed | May be restricted |
| eSIM Availability | Yes | Yes | Yes |
| Price (5 days) | ₩27,500–₩33,000 | ₩27,500–₩33,000 | ₩27,500–₩30,000 |
- SKT: Most stable and widely covered network
- KT: Great for high-speed access in major cities
- LG U+: Often the cheapest, great for budget-conscious travelers
Airport Purchase vs. Online Booking
Buying at the Airport:
Fast and convenient, though you may face queues during peak arrival times.
Booking Online in Advance:
Discounted prices, guaranteed stock, and pickup/delivery options.
Using Coupons:
Apps like Naver or Kakao sometimes offer discounts (interface may require Korean).
How to Set Up Your eSIM
For iPhone:
Settings → Cellular → Add eSIM → Scan QR code → Activate and restart
For Google Pixel:
Settings → Network & Internet → Mobile Network → Download SIM → Scan QR or enter manually → Adjust APN settings if needed
Important: Always test your connection before leaving the airport.
Other SIM Purchase Options
- Convenience Stores: Basic option with limited service
- Carrier Shops: Ideal for long-term travelers or students
- SIM Vending Machines: Fast, self-service kiosks with English support
Mobile Data Tips for Visitors
- Most SIMs allow hotspot/tethering
- Unlimited plans may reduce speed after daily limits
- Public Wi-Fi often requires phone number verification
Best SIM or eSIM by Traveler Type
| Traveler Type | Recommended Option |
|---|---|
| Short-Term Tourist | KT or SKT SIM at Incheon Airport |
| Long-Term Visitor | Register at a local carrier store in the city |
| Tech-Savvy Traveler | Pre-booked eSIM with instant QR activation |
| Budget Traveler | LG U+ SIM or buy from a convenience store |
Final Thoughts
Getting a SIM or eSIM in Korea in 2025 is quick, affordable, and sets you up for a smooth trip. Whether you’re traveling for a few days or staying for several months, there’s a plan that fits your needs. Start your journey fully connected — and be sure to check out our visual guides for setup instructions and booth maps to help you get started with confidence.
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