Stay connected with ease while you explore Korea.
One of the first things travelers need upon landing in Korea? Mobile internet.
Whether you’re using maps, translating menus, or messaging friends on KakaoTalk, a Korean SIM card is a solid choice for reliable data without carrying an extra device.
In this guide, we’ll show you how to get one quickly and confidently – whether you buy it at the airport, online, or in the city.
Why You Might Choose a SIM Card in Korea
While eSIM and pocket Wi-Fi are great options, many travelers still prefer physical SIM cards for one big reason: they’re simple.
Benefits of a SIM card:
✅ No need to rely on Wi-FI or charging an extra device
✅ Works on all unlocked phones
✅ Often cheaper than renting pocket Wi-FI
✅ Some plans include a local Korean phone number
Where to Buy a Korean SIM Card
1. Incheon Airport
Most international travelers land at Incheon International Airport, where SIM card counters are easy to spot in all arrival terminals.
- KT, SK Telecom, LG U+ booths available
- Open 24/7 in Terminal 1 and Terminal 2
- Show your passport and pay by card or cash
- Setup assistance often included
Good for: Last-minute buyers, short-term tourists
2. Online (Reserve Ahead)
You can order a SIM card online through sites like Klook, Trazy, or the official websites of KT and SKT Telecom.
- Pick up at the airport or have it delivered to your hotel
- Often cheaper than buying in person
- You can read reviews and compare plans easily
Good for: Budget travelers, planners who like convenience
3. Convenience Stores & Phone Shops
If you’re already in the city, you might be able to buy a SIM card at a GS25, CU, or 7-Eleven, but options may be limited. Local mobile phone shops usually carry more plans.
Good for: Travelers staying longer or needing flexible data.
Types of SIM Cards for Travelers
Data-Only Sim
- Great for tourists who use apps and internet only
- No phone number included
- Unlimited or high-speed data caps vary by plan
Voice + Data SIM
- Includes a Korean phone number
- Good for making reservations, receiving calls
- Requires passport verification, more setup steps
Short-Term vs Long-Term Plans
- Short-term SIMs: 5, 10, 30 days – no ID registration needed
- Long-term SIMs: 60+ days – may require ARC (Alien Registration Card)
Major Mobile Providers in Korea
The three biggest telecom providers offering SIMs to foreigners are:
- KT (Olleh): Strong coverage, good for tourists
- SK Telecom (T World): Largest network, slightly more expensive
- LG U+: Solid network, often affordable options
Many resellers also use these networks: EG SIM, Woori Mobile, Chingu Mobile
Tip: KT booths usually have English-speaking staff at the airport.
What You Need to Get a SIM Card
To buy a tourist SIM card in Korea, you typically need:
- A passport (for ID verification)
- An unlocked phone
- Your arrival date and travel duration (when reserving online)
For short-term prepaid SIMs, no ARC is needed. But longer-term voice plans may require extra documentation.
How to Install and Activate Your SIM Card
- Insert the SIM card (usually nano size)
- Restart your phone
- Follow any setup prompts (some SIMs come with APN setup instructions)
- Connect to the network – usually automatic
- Test your data, and you’re good to go!
Airport counters often help with setup. If not, check the flyer in your SIM pack.
SIM Card FAQs for Tourists
❓Can I top up or extend my SIM plan?
Yes! Some prepaid SIMs allow online top-up, others may require visiting a shop.
❓Will I get a Korean number?
Only voice + data SIMs come with a phone number. Data-only SIMs won’t.
❓Can I use hotspot/tethering?
Yes, most SIMs allow hotspot, but data sppeds may slow after limits.
❓Is unlimited data really unlimited?
Usually, you get a set amount of high-speed data per day, and then speeds slow down (e.g. 3GB/day at 4G, then unlimited at 3G)
Final Tips Before You Buy
- Book in advance online if you want the best rates
- Make sure your phone is unlocked before traveling
- Choose a SIM plan that matches your travel length + data usage
- Don’t lose the SIM ejector tool that comes in the pack!
Conclusion
Getting a SIM card in Korea is easy, convenient, and affordable. No rental returns. No roaming fees. Just plug in and go!