Korea eSIM 5G Unlimited Data — 10 days
Take the KTX to Busan or Gyeongju and stay connected. Changing cities does not mean setting anything up again.
¥380/day · 240 hours
The period runs 240 hours (10 days) from the moment your phone picks up a signal in Korea. For anything longer, choose the 15-day plan.
- Unlimited data
- One tap to install — no second device
- SKT 5G network
- Full refund before installation
Will it work on your phone?
An eSIM only works on a compatible handset. You can check right now.
- 1Type
*#06#into the phone appDo not press call — the numbers alone bring the screen up. - 2Look for an EID (a number starting with 89)If it appears, your phone supports eSIM. If you only see an IMEI, it does not.
- 3Make sure the phone is carrier-unlockedA handset bought from a carrier has to have its SIM lock removed.
Supported phones
- iPhone XS / XR and later
- eSIM-capable Android phones (Galaxy, Pixel and others)
- Any other unlocked phone that shows an EID will also work
The eSIM cannot be used on an unsupported phone. If your device turns out not to support eSIM, that is before installation or activation, so you are entitled to a full refund — but we recommend checking before you buy.
Against roaming and pocket Wi-Fi
| NX MOBILE (10 days) | Carrier roaming day pass | Pocket Wi-Fi rental | |
|---|---|---|---|
| Per day | ¥380 | ¥800–1,200 | Varies by dates |
| Data | Unlimited (5G) | 3 GB per 24 h, or drawn from your home plan | Unlimited plans exist |
| Delivery | QR code by email, in minutes | Active right after you sign up | Pick up and return at an airport counter |
| What you carry | Just your phone | Just your phone | A second device and its charger |
| Loss or damage | No device, nothing to lose | Nothing to lose | You may be charged for the device |
That is at least ¥420 a day less than the ¥800–980/day carrier day passes.
Carrier pricing checked on the operators' own sites, July 2026 (NTT Docomo Sekai Sonomama Giga ¥980/day, SoftBank Kaigai Anshin Teigaku ¥980/day, au Kaigai Houdai ¥800/day when reserved in advance). Pocket Wi-Fi rates move with dates and promotions, so we do not quote one.
Product details
The terms of sale for this item are set out below. Please read them before purchasing.
| Product | NX MOBILE Korea eSIM 5G, unlimited data, 10 days (SKT network) |
|---|---|
| Network | SK Telecom (Korea), 5G |
| Data | Unlimited |
| Validity | 10 days (240 hours) |
| Starts | When the device first connects to the network in Korea |
| Phone number | Korean number included (free incoming calls) |
| Tethering | Supported (internet sharing) |
| Coverage | Nationwide in South Korea |
| Device requirement | An eSIM-capable unlocked device (dial *#06# and check that an EID starting with 89 is shown) |
Terms of sale
The disclosures required for online sales.
| Price | ¥3,800 (tax included, no additional fees) |
|---|---|
| Seller | NEXT MANAGEMENT LLC |
| Payment | Credit card (VISA / Mastercard / JCB / American Express / Diners Club / Discover) and other methods shown at checkout |
| How it is delivered | QR code by email (nothing is shipped; one-tap install on iPhone) |
| Delivery time | Usually within a few minutes of payment |
| Eligibility | An eSIM-capable unlocked device is required. For foreign travelers to Korea (stays of up to 90 days) |
| Refund / cancellation | Full refund before installation or activation. After activation, refunds are not available due to the nature of digital products |
| Contact | info@nxt-m.net / +82-32-215-5975 (weekdays 10:00–18:00 KST) |
Before you buy
- This product is for foreign travelers to Korea (stays of up to 90 days). Voice calls and SMS are not available to holders of Korean nationality or special permanent residency (data service remains available).
- An eSIM-capable unlocked device is required. Dial *#06# and check that an EID starting with 89 is shown.
- The validity period runs in 24-hour blocks from the moment your device first connects to a network in Korea — not when you buy or install the eSIM.
- Full refund before installation or activation; not available after activation. See our Terms & Refund Policy for details.
Frequently asked questions
What devices are supported?
Any eSIM-compatible, carrier-unlocked device works. Dial "*#06#" in your phone app — if an EID (eSIM identifier number) appears, your device is compatible.
How do I receive the QR code after purchase?
After payment, we usually send the eSIM QR code to your registered email within a few minutes. If it doesn't arrive, please check your spam folder and contact info@nxt-m.net or use the contact form — we'll resend it.
When does the plan period start?
It starts the moment you arrive in Korea and pick up a local signal, and it runs in 24-hour blocks (e.g., 3 days = 72 hours). Installing the eSIM profile before you leave does not start the countdown.
Can I make calls or send SMS?
If you only need data, there is nothing to register. Passport verification with SK Telecom (free, online) is needed only if you want to receive calls and SMS on the Korean number. Open skroaming.com from the verification QR on your eSIM voucher and enter your passport details (08:00–22:00 Korea time; outside those hours the airport roaming centre can do it). It is a one-time step. Outgoing calls work once you top up at skroaming.com (top-ups of KRW 5,500–55,000; domestic calls KRW 4.4/sec, calls to Japan KRW 990/min, SMS KRW 33).
Unlimited Korea, for 10 days.
From purchase to QR code in as little as 3 minutes.
Buy this plan — ¥3,800If something goes wrong in Korea
SK Telecom, the operator behind the line, staffs a roaming desk from 08:00 to 21:00 Korea time. You can reach it over hotel Wi-Fi.