eSIM South Korea: Data for Seoul, Busan and Beyond

Three points set a Korea eSIM apart from plans for most other destinations:

Install it after you arrive

For South Korea, the eSIM is added on the spot, not at home. Buy the plan whenever it suits you, but keep the QR code unused until you are in the country.

Activate within 90 days of purchase

Many destinations give you 180 days between buying and activating. South Korea gives you 90. The validity of the plan begins later, with the first connection to a supported network in Korea.

Hotspot is available

You can share the connection with other devices. Details follow further down.

Even though the installation waits until Korea, most of the preparation happens before you leave.

First, make sure your phone supports eSIM and is not locked to a carrier. Some iPhones sold in mainland China, Hong Kong and Macau were built without an eSIM slot, so check your settings if your device comes from there.

Next, buy the plan, ideally a few weeks before the trip so the 90-day window is not an issue. You pay from your Anosim balance, which you can top up with cryptocurrency or a bank transfer. No ID check is needed. Your QR code then waits in your account under My eSIM Plans.

Set aside a few minutes after passport control:

1. Join a Wi-Fi network, for example at the airport. The phone needs internet to install the eSIM.
2. Open My eSIM Plans and scan your QR code. It works for a single installation, so never delete the profile afterwards or scan the same code again.
3. Switch the eSIM on, make it the line for mobile data and turn on data roaming for it.
4. Wait a moment. The connection to a Korean network usually comes within one or two minutes.

If the phone still shows no signal, restart it, toggle airplane mode once and set network selection to automatic. Our support team answers on Telegram, in the website chat and by email at any hour.

Coverage is listed for Seoul, Incheon, Busan, Daegu, Daejeon, Gwangju, Suwon, Ulsan, Changwon and Goyang, and for other cities too. With your eSIM in Seoul you can look up subway changes and restaurant queues, and in Busan the beaches and markets are a map search away.

The phone connects via 3G, 4G/LTE or 5G, depending on the operator and the area. After intensive use the operator may limit the speed in line with its fair-use rules.

Is Korea part of a longer trip? See eSIM Japan, eSIM China and eSIM Taiwan for the next stop.

Personal hotspot works with the South Korea plans. Turn it on, and your laptop or tablet can use the same connection, for example to finish a report on the train or to let your kids watch a show on the way to the hotel.

Keep in mind that every device on the hotspot uses data from your one plan.

Because the plan is data only, it has no number that could receive a verification SMS. When a delivery app, a ticket site or another service wants to confirm you by text message, pair your eSIM with an Anosim number:

- Activation catches one code and is done.
- Rent Service keeps a number reserved for one service.
- Rent Number is a full number for every service you use.

If a number is virtual, it is labelled as such in the provider selection. Which plan is the best eSIM for Korea depends on your phone and your trip; the best eSIM for South Korea for you may also be part of a route through several countries, which you can plan on the eSIM page.