eSIM for South Korea: plans, setup, subway and KTX coverage

For South Korea, a data-only eSIM is enough for most tourist data needs if your phone supports LTE, because there is no 2G or 3G left in the country. BeeSim South Korea plans connect to SKTelecom and LG Uplus on 5G, while South Korea has 5G in every city and 4G coverage elsewhere, including subway systems and KTX trains.

Use the destination page to compare current prices and plan availability: South Korea eSIM. Do not use old price screenshots or cached blog snippets for checkout decisions; live plan prices stay on the destination page.

What eSIM coverage is like in South Korea on metro systems and KTX

South Korea’s mobile networks are SK Telecom, KT, LG U+. The country has 5G in every city, with 4G on the rest of the network, including subway systems and KTX trains.

For a traveller, the practical point is simple: your phone must support LTE. If a very old handset depends on 3G, it is not suitable for South Korea because those older networks are no longer available.

When you are on the subway or a KTX train, focus on the data allowance rather than only the 5G label. A short ride with maps and chat uses little data. Video, cloud photo backup, laptop tethering and long scrolling sessions use much more. If you plan to work from trains or share your connection, check the plan page carefully before buying.

The phone should normally stay on automatic network selection. If you manually lock it to a network and then move through tunnels, stations or rail corridors, it may take longer to recover when signal conditions change.

Which South Korea eSIM plan size to pick using catalog examples

The South Korea catalog has fixed-data plans and daily plans. Fixed-data plans give you one allowance for the whole validity period. Daily plans give you a full-speed allowance each day, then the speed drops after that day’s allowance is used.

Plan type	Data allowance	Validity	What it suits
Fixed data	1 GB	7 days	Short trips with light map and chat use
Fixed data	3 GB	30 days	Low-data travel with regular Wi-Fi
Fixed data	5 GB	30 days	A week or more of ordinary navigation and messaging
Fixed data	10 GB	30 days	Heavier daily use away from hotel Wi-Fi
Fixed data	20 GB	30 days	Frequent browsing, uploads or some hotspot use if the plan allows it
Fixed data	50 GB	30 days	High-data trips where replacing the plan mid-trip would be annoying
Daily	500 MB, 1 GB, 2 GB, 3 GB, 5 GB or 10 GB per day	1 to 30 days	Travellers who prefer a daily reset; speed drops after the daily allowance

Pick a fixed-data plan when your usage is predictable. For example, choose 3 GB or 5 GB for light travel where Wi-Fi covers evenings and hotel time. Move up to 10 GB or 20 GB if you expect to use navigation all day, translate menus, upload photos or spend time on trains without Wi-Fi. Use 50 GB only when you know your phone will do a lot of data work, such as laptop tethering where the plan page confirms hotspot is available.

Daily plans make sense when you do not want one heavy day to drain the whole trip allowance. A landing day can use more data than expected because you may be loading maps, arranging transport and checking bookings while moving around. With a daily plan, the full-speed allowance resets on the next day, subject to the plan’s validity and fair use terms shown on the plan page.

The plan validity starts when the eSIM first connects to a network in South Korea, not when you install it at home. The eSIM must be installed within 180 days of purchase.

To see the current plan list and live pricing, open South Korea eSIM.

Will a data-only eSIM work for tourists in South Korea?

Yes, for most visitors. Many local services work without a Korean phone number, including Naver Maps, Kakao T taxis and delivery apps, so a data-only eSIM covers normal tourist needs.

A data-only plan does not include a local phone number or SMS. Keep your home SIM or primary eSIM active if you need banking texts, airline messages or calls to your usual number. On dual-SIM phones, the clean setup is usually this: keep your home line available for your number, then set mobile data to the Korea eSIM.

Before buying, check that your device supports eSIM and is not locked to one carrier. Use the compatibility page if you are not sure: Compatible phones. If your phone has only one active eSIM slot, remove any old travel eSIM you no longer need before installing the new one.

How to install and set up an eSIM for South Korea so it works on arrival

Install the eSIM while you still have reliable Wi-Fi. You can use a QR code or enter the SM-DP+ details manually if the QR code cannot be scanned. The plan will not start counting down until the first connection in South Korea.

For iPhone on iOS 17 or iOS 18:

1. Open Settings → Cellular, or Settings → Mobile Service.
2. Tap Add eSIM.
3. Choose Use QR Code, then scan the QR code from your order.
4. If scanning fails, tap Enter Details Manually and enter the SM-DP+ information from the order.
5. Name the line “Korea eSIM” so you can identify it later.
6. Before departure, leave your normal line selected for mobile data if you do not want the travel line to attach early.

When you land:

1. Go to Settings → Cellular, or Mobile Service.
2. Tap Cellular Data and select “Korea eSIM”.
3. Open the Korea eSIM line and turn Data Roaming on.
4. Keep Network Selection on Automatic unless support asks you to change it.

For Samsung on Android 14 or Android 15:

1. Open Settings → Connections → SIM manager.
2. Tap Add eSIM, then Scan QR code.
3. After installation, set Preferred SIMs → Mobile data to the Korea eSIM.
4. Go to Settings → Connections → Mobile networks and turn Data roaming on for the eSIM if your model shows the option there.

For Google Pixel on Android 14 or Android 15:

1. Open Settings → Network & internet → SIMs.
2. Tap Add SIM, then Set up an eSIM.
3. Scan the QR code, or choose the manual entry option if needed.
4. In SIMs, select the Korea eSIM for Mobile data.
5. Open the eSIM settings and turn Roaming on.

For Xiaomi on Android 14 or Android 15, menu names vary by model:

1. Open Settings → SIM cards & mobile networks.
2. Tap Manage eSIM or Add eSIM.
3. Scan the QR code or enter the manual details.
4. Set Default for mobile data to the Korea eSIM.
5. Turn Data roaming on for the eSIM line if the phone shows a separate roaming switch.

If data does not work after arrival, do these steps in order:

1. Confirm the eSIM line is turned on.
2. Confirm mobile data is assigned to the Korea eSIM, not your home SIM.
3. Turn Data Roaming on for the Korea eSIM.
4. Keep network selection on Automatic.
5. Toggle Airplane Mode on, wait a short moment, then turn it off.
6. Restart the phone if it still has no data.
7. If the phone shows signal but no internet, check whether the plan has run out of data or whether a daily allowance has dropped to reduced speed.

Hotspot, multi-device use, and what happens when you run out of data

Do not assume hotspot is included on every plan. Check the individual plan page before buying, because hotspot and tethering availability is stated per plan.

If hotspot is available on the plan you choose, treat it as a high-data feature. A laptop can use data quickly through system updates, cloud sync and large webpages. If you need to connect a tablet or computer often, start with a larger fixed-data plan or a daily plan with enough full-speed data for the days when you will tether.

Plans cannot be topped up. When the allowance is used, buy another plan and install it as a new eSIM line. If you are using a daily plan, remember that the speed drops after that day’s allowance is used; the next day’s allowance depends on the plan’s remaining validity.

Regional eSIMs that include South Korea when one line is simpler

Use a regional plan when South Korea is one stop in a longer trip and you would rather keep one eSIM line active across borders. South Korea is included in these regional options:

Regional plan	Areas covered
Japan & South Korea	2 countries
China mainland & Japan & South Korea	3 countries
Asia	12 areas
Asia	14 areas

A regional plan is useful when you will land in one country, cross to another and want data to continue without installing a new country-specific eSIM at each stop. Check the regional plan page for the exact country list, validity and hotspot rules before checkout.

Refund rules and purchase details you should know before checkout

For payment and refund rules, use the current FAQ rather than old article text: FAQ. Prices are listed live on the storefront, and this article does not name them because plan prices change.

Before checkout, confirm four things on the plan page: the data allowance, validity, whether hotspot is allowed and whether you want a South Korea-only plan or a regional plan. If any of those details do not match your trip, go back to the plan list before installing the eSIM.