Last updated: October 2026
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Every single friend who visits me asks this one question about three days before their flight: “Should I get an eSIM, a pocket WiFi, or a SIM card?” Then they spend four hours reading reviews and still pick wrong.
So here’s the no-nonsense version. What each option actually is, who it’s for, what changed in Korea recently (a couple of things did change), and the move I recommend to 90% of people.
⚡ TL;DR: Phone supports eSIM? Get a data-only eSIM before you fly. Done. Need a Korean phone number for verification codes? Get a tourist SIM or eSIM with a 010 number from a Korean carrier. Traveling as a big group or with lots of devices? Pocket WiFi. Whatever you pick, sort it out before you land.
The quick comparison
| eSIM (data-only) | Tourist SIM / eSIM with number | Pocket WiFi | |
|---|---|---|---|
| Best for | Most travelers | People who need a Korean number | Groups, families, laptops |
| Setup | Scan a QR code before you fly | Airport counter or online | Pick up and return at the airport |
| Korean phone number | No | Yes (usually 010) | No |
| Passport needed | No | Yes | Usually just for rental |
| Extra thing to carry | No | No | Yes, plus charging it |
| Your home number | Still works (dual SIM) | Depends on your phone | Still works |
Option 1: data-only eSIM (my pick for most people)
An eSIM is a digital SIM. You buy it online, scan a QR code, and your phone gets Korean data, while your normal number keeps working for WhatsApp and bank texts. No counter, no queue, no tiny SIM card falling out of your hand at the airport.
- Check your phone first: dial
*#06#. If you see an “EID” number, your phone supports eSIM. - Your phone must be unlocked. A carrier-locked phone won’t accept another eSIM. Call your carrier before your trip.
- Install it at home on WiFi, then switch it on when you land.
- Korean carriers like LG U+ sell data-only tourist eSIMs with no passport step. Prices I saw in fall 2026 started around ₩6,500 for 1 day and ₩18,000 for 3 days. Global eSIM apps also work fine.
🔥 Hot take: Picking up a SIM card at the airport in 2026 is like printing your boarding pass at home. It works. It’s just a little bit retro.
Option 2: tourist SIM or eSIM with a Korean number
Some things in Korea want a Korean phone number for verification texts. A tourist plan from a Korean carrier (SKT, KT, LG U+) can give you a 010 number along with data.
- Prepaid tourist lines need your passport.
- Some plans give a full 010 number, others a receive-only number, and some 1-day plans are data-only. Read the plan before you buy.
- A tourist number can usually receive one-time codes, but it often won’t pass full Korean identity verification. Some shopping and payment apps may still block you.
⚠️ What changed recently:
• Since December 2025, each passport is limited to one passport-based mobile line. If you already have one from a past trip, you may run into trouble.
• Jeju Airport has no carrier counter since the end of June 2026. Flying straight into Jeju? Buy online before you arrive.
🤫 Friend tip: Airport counters can cost noticeably more than buying the same plan online. One traveler in 2026 reported paying around ₩45,000 at a booth for a plan they later saw online for about ₩25,000. Book ahead, pick up at the counter.
Option 3: pocket WiFi (egg)
A small battery-powered router you rent at the airport and carry everywhere. Koreans call it a “WiFi egg.” Everyone in your group connects to it.
- Great for: families, groups traveling together, people working on laptops, or phones that don’t support eSIM.
- The catch: one more device to charge every night, and if your group splits up, someone loses internet.
- You return it at the airport before you fly home. Don’t forget. They will charge you.
Do I even need data? Isn’t Korea full of free WiFi?
Korea has a lot of free WiFi: subways, cafes, many public spaces. But you will want data for Naver Map while walking, Papago for menus, and Kakao T for taxis. Relying on free WiFi in Seoul is like relying on finding a taxi on a Friday night in Hongdae. Possible. Stressful. (More on that in my 13 tourist mistakes list.)
So which one should you get?
| If you… | Get this |
|---|---|
| Have a newer unlocked phone | Data-only eSIM |
| Need a Korean number for codes | Tourist SIM/eSIM with 010 number |
| Are traveling as a family or group | Pocket WiFi (or eSIMs for everyone) |
| Have an older phone without eSIM | Physical tourist SIM or pocket WiFi |
| Are flying straight into Jeju | Buy online before you go |
🙅 Skip: waiting until you land and buying whatever the first airport booth offers.
👉 Do this instead: compare and buy online a few days before your flight, then just scan or pick up.
FAQ
Is an eSIM or pocket WiFi better in Korea?
For solo travelers and couples with modern phones, eSIM wins: nothing to carry or charge. Pocket WiFi makes sense for groups sharing one connection.
Do I need a Korean phone number as a tourist?
Most tourists don’t. You can navigate, translate, and order taxis with data alone. A Korean number helps if you need to receive verification codes for local services.
Can I buy a SIM card at a convenience store?
Some convenience stores sell SIM kits, but activation can take time and they don’t sell eSIMs. It’s easier to buy online or at the airport.
eSIM, SIM, or WiFi egg team? Tell me what worked for you in the comments.
Prices, plans, and rules change often. Check the carrier or seller’s official page before you buy.
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