Multi-country plan · 2 countries
Japan and South Korea eSIM Plans
One eSIM for both countries.
One Lumo eSIM works in both countries and switches to the local network by itself when you cross. The two-country plan uses KDDI/au and SoftBank in Japan, and SK Telecom and LG U+ in South Korea.
- Instant QR delivery
- No voice or SMS
- Hotspot allowed
[ / Countries ]
14 of 26 countries in your plan.2 of 26 countries in your plan.19 of 26 countries in your plan.12 of 26 countries in your plan.20 of 26 countries in your plan.
Plans here come in several coverage options, each with its own country list. Pick one to see exactly what it includes — countries on your route are highlighted.
- AustraliaIn the 20-country optionOptus · Telstra—5G
- BangladeshGrameenphone · Banglalink · RobiIn the 14- and 19-country optionsBanglalink · Grameenphone4G—
- CambodiaMetfone · CellcardIn the 12-, 14- and 20-country optionsMetfone4G—
- ChinaIn the 12-, 19- and 20-country optionsChina Mobile · China UnicomChina Unicom—5G
- Hong Kongcsl · SmarToneIn the 12-, 14-, 19- and 20-country options3 · SmarTone · csl/1010csl5G—4G
- IndiaAirTelIn the 14-, 19- and 20-country optionsAirTel · JioJio · Vodafone · IDEA · AirTel5G—4G
- IndonesiaTelkomsel · XL · IndosatIn the 12-, 14-, 19- and 20-country options3 · Indosat · TelkomselTelkomsel5G—
- IsraelIn the 20-country optionPelephone—5G
- JapanKDDI/au · SoftBankNTT docomo · KDDI/au · Rakuten MobileKDDI/au5G
- KazakhstanIn the 19-country optionTele2.kz · Beeline—5G
- KuwaitIn the 20-country optionSTC—5G
- KyrgyzstanIn the 19-country optionBeeline—4G
- LaosLao TelecomIn the 14- and 19-country optionsUnitel5G—3G
- MacaoCTMIn the 12-, 14- and 20-country options5G—
- MalaysiaMaxis · CelcomDigiIn the 12-, 14-, 19- and 20-country optionsU Mobile · CelcomDigiMaxis · CelcomDigi · U Mobile5G—
- New ZealandIn the 20-country optionSpark—4G
- PakistanIn the 19- and 20-country optionsJazzTelenor—4G3G
- PhilippinesSMART · GlobeIn the 14-, 19- and 20-country optionsSMARTGlobe5G—
- Saudi ArabiaIn the 20-country optionMobily—5G
- SingaporeIn the 12-, 19- and 20-country optionsStarHub · SingTel · TPG TelecomM1 · SingTel—5G
- South KoreaSKTelecom · LG UplusSKTelecom5G
- Sri LankaIn the 19- and 20-country optionsEtisalat · Dialog · Mobitel · Hutch3—5G4G
- TaiwanChunghwa · Taiwan MobileIn the 12-, 14- and 19-country optionsChunghwa · FarEasToneChunghwa5G—
- ThailandAIS · DTAC · TrueMove HIn the 12-, 14-, 19- and 20-country optionsTrueMove H · CAT · AISDTAC · TrueMove H5G—
- UzbekistanIn the 19-country optionBeeline—4G
- VietnamViettel Mobile · Vinaphone · MobiFoneIn the 12-, 14-, 19- and 20-country optionsMobiFone · VietnamobileMobiFone · Viettel Mobile · Vietnamobile5G—4G
[ / Popular ]
Popular Japan and South Korea eSIM plans
The best value, the common sizes and the unlimited option. Each card opens that plan in the builder.
[ / All plans ]
Every Japan and South Korea eSIM plan
18 plans · sorted by validity
[ FIXED DATA ]
Prices in USD. Updated 2026-10-15.
[ / Region or country ]
Japan and South Korea plan or a country plan?
This page
Japan and South Korea plan
- One eSIM for both countries.
- No swap at the border.
Often cheaper for one country
Country plan
If your whole trip is in one country, its own plan can cost less.
[ / Duration ]
Browse by trip length.
- Stopover1 day1 plan from $2.001-day Japan and South Korea eSIM plans →
- Stopover3 days1 plan from $5.003-day Japan and South Korea eSIM plans →
- City hop7 days2 plans from $2.007-day Japan and South Korea eSIM plans →
- Rail trip15 days2 plans from $4.0015-day Japan and South Korea eSIM plans →
- Long stay30 days6 plans from $4.0030-day Japan and South Korea eSIM plans →
- Long stay60 days1 plan from $85.0060-day Japan and South Korea eSIM plans →
- Long stay90 days2 plans from $57.0090-day Japan and South Korea eSIM plans →
- Long stay180 days2 plans from $121.00180-day Japan and South Korea eSIM plans →
- Long stay365 days1 plan from $513.00365-day Japan and South Korea eSIM plans →
- No data capUnlimited9 durations from $2.00All unlimited Japan and South Korea eSIM plans →
[ / How much data ]
How much data do you need for Japan and South Korea?
For a two-week trip split between the two, most travelers need about 10 GB: roughly 700 MB a day for maps, messaging, social media and photo uploads.
Light
≈ 300 MB / dayMaps, messaging and email.
Typical
≈ 700 MB / dayAdds social media, music and photo uploads.
Heavy
≈ 2 GB / dayAdds video calls, streaming or a laptop hotspot.
[ / Saving data ]
Make your data last
A few habits stretch any plan. More ways to track and cut mobile data use.
Save maps offline
Download the Japanese cities you'll visit in Google Maps before you fly.
Turn on Low Data Mode or Data Saver
Background updates and photo backups then wait for Wi-Fi.
Use free Wi-Fi when it's there
Japan's major airports and most city hotels have it. In Korea it's in airports and in subway and train stations.
[ / One eSIM or two ]
One eSIM for both countries, or two separate eSIMs?
For most trips, one eSIM is the simpler choice: install it at home and your data follows you across the border. Two single-country eSIMs can cost less, but you manage two plans.
One Japan + South Korea eSIM
[ JP+KR ]- Setup
- Install once, at home, before you fly
- Border
- Nothing to do: it picks the local network when you land
- Data
- One balance for the whole trip, wherever you use it
- Networks
- 🇯🇵 KDDI/au, SoftBank · 🇰🇷 SKTelecom, LG Uplus
Two single-country eSIMs
[ JP ] + [ KR ]- Setup
- Install twice. With short plans, the second goes on mid-trip over Wi-Fi
- Border
- Switch your data line to the second eSIM
- Data
- Split in advance; two plans to track
- Networks
- Some Japan plans add NTT docomo and Rakuten Mobile
[ / Crossing the border ]
Can I use the same eSIM in Japan and South Korea?
Yes. Install it once. Land in Seoul, Busan or Jeju and it joins SK Telecom or LG U+ by itself; back in Japan it rejoins KDDI/au or SoftBank.
No data after you land? 4 quick fixes
- 01Turn off airplane mode.Keep Lumo as your cellular data line, with data roaming on for the Lumo line.
- 02Give it a few minutes.The first connection in a new country can take a little while, occasionally up to an hour.
- 03Still no data after 10 minutes?Airplane mode on for 30 seconds, then off. Still nothing: pick the network yourself (SK Telecom or LG U+ in Korea, KDDI/au or SoftBank in Japan).
- 04Don't delete the eSIM to reset it.A deleted eSIM usually can't be reinstalled.
[ / Good to know ]
Good to know for the trip
Japan and South Korea share a time zone, with no daylight saving, so your phone's clock doesn't change.
The fast Queen Beetle has been permanently withdrawn. The overnight New Camellia is the remaining one.
[ / Networks ]
Networks and 5G coverage in Japan and South Korea
Two of Japan's four national networks and two of Korea's three. It connects to 5G wherever the partner network offers it and your phone supports it.
Japan
South Korea
SKTelecomLG Uplus[ / Apps ]
Apps you'll need data for in Japan and South Korea
Data matters most in South Korea, where the apps locals rely on are Korean. In Japan, the apps you already use mostly just work.
Naver Map · KakaoMap
Google Maps doesn't do walking or driving turn-by-turn in Korea (The Korea Herald, Sep 2026). Both have English and live subway and bus arrivals.
Papago
Camera, voice and conversation translation.
k.ride · Baemin
Kakao Mobility's taxi app for visitors takes cards issued outside Korea. Baemin now has English ordering and takes foreign cards through Apple Pay.
Korean ID checks
Concert and baseball tickets and some restaurant bookings need Korean phone verification (The Korea Times, May 2026). Book on English-language sites that take your card, or buy at the venue.
Suica · PASMO · ICOCA
Add them to Apple Wallet on iPhone 8 or newer, or use JR East's Welcome Suica Mobile. Google Wallet Suica works only on phones sold in Japan. Google Maps and GO, S.RIDE, Uber and DiDi taxis all work in English.
WhatsApp · LINE · KakaoTalk
LINE is Japan's everyday messenger and KakaoTalk is Korea's. All three run over mobile data.
[ / Calls and texts ]
Phone number, SMS codes and calls
The eSIM is data-only: no phone number, no calls, no texts. Keep your home SIM on as a second line so bank and app codes still reach you, with its data roaming off. Call over WhatsApp, FaceTime, LINE or KakaoTalk.
Receiving texts abroad is free on many plans, but not all. Check with your home carrier.
[ / Alternatives ]
eSIM vs roaming, airport SIM or pocket Wi-Fi
One plan for both, bought before you leave, nothing to collect or return. Airport SIMs and pocket Wi-Fi cover one country each.
One country only
[ / Compare providers ]
Best eSIM for Japan and Korea: how providers compare
Few providers sell a plan for these two countries alone. Airalo and Saily cover both only through larger Asia plans. Compare networks and refund terms before you buy.
[ / Reviews ]
Loved by travellers.
[ / Setup ]
Set up once. Cross every border.
- 01
Buy as a guest
Pick a plan and check out in seconds — no account, no sign-up, no password to remember.
- 02
Get your QR
Your eSIM QR code is delivered instantly to your inbox. Nothing to ship, nothing to wait for.
- 03
Scan and connect
Scan the code, turn on data roaming for the Lumo line, and you are online in about 30 seconds.
- 04
Cross borders freely
One eSIM covers every country in your option. Your phone joins the next country's network by itself — no swap at the border.
How much does an eSIM for Japan and South Korea cost?
186 prepaid eSIM plans for Japan and South Korea, from $2.00 USD. Each is a one-off purchase with no contract and no subscription, and the price shown is the price you pay.
Which networks does a Lumo eSIM use in Japan and South Korea?
By option: Japan + South Korea — KDDI/au · SoftBank · SKTelecom · LG Uplus 5G; 14 countries — Grameenphone · Banglalink · Robi · Metfone · Cellcard · csl · SmarTone · AirTel · Telkomsel · XL · Indosat · KDDI/au · SoftBank · Lao Telecom · CTM · Maxis · CelcomDigi · SMART · Globe · SKTelecom · LG Uplus · Chunghwa · Taiwan Mobile · AIS · DTAC · TrueMove H · Viettel Mobile · Vinaphone · MobiFone; 20 countries — Optus · Telstra · Metfone · China Unicom · csl · Jio · Vodafone · IDEA · AirTel · Telkomsel · Pelephone · KDDI/au · STC · CTM · Maxis · CelcomDigi · U Mobile · Spark · Telenor · Globe · Mobily · M1 · SingTel · SKTelecom · 3 · DTAC · TrueMove H · MobiFone · Viettel Mobile · Vietnamobile; 19 countries — Banglalink · Grameenphone · China Mobile · China Unicom · 3 · SmarTone · csl/1010 · AirTel · Jio · Indosat · Telkomsel · NTT docomo · KDDI/au · Rakuten Mobile · Tele2.kz · Beeline · Unitel · U Mobile · CelcomDigi · Jazz · SMART · StarHub · SingTel · TPG Telecom · SKTelecom · Etisalat · Dialog · Mobitel · Hutch · Chunghwa · FarEasTone · TrueMove H · CAT · AIS · MobiFone · Vietnamobile; 12 countries — Metfone · China Unicom · csl · Telkomsel · KDDI/au · CTM · Maxis · CelcomDigi · U Mobile · M1 · SingTel · SKTelecom · Chunghwa · DTAC · TrueMove H · MobiFone · Viettel Mobile · Vietnamobile; China + Japan + South Korea — China Unicom · KDDI/au · SKTelecom 5G. Coverage is Japan + South Korea, or 14 countries, or 20 countries, or 19 countries, or 12 countries, or China + Japan + South Korea — where the data service works, and the operator names are the ones the network reports for each plan.
Can I make calls or send SMS?
No. Lumo plans for Japan and South Korea are data-only — they provide mobile internet with no calls, SMS or phone number. Keep your primary SIM active if you need voice and text.
Will my phone work with a Lumo eSIM?
Most phones released from 2018 onwards support eSIM, including iPhone XS and later, Google Pixel 3 and later, and many Samsung Galaxy models. Check Settings > Cellular (or Mobile Data) for an eSIM or Add Cellular Plan option, and make sure the phone is carrier-unlocked.
How quickly can I get connected in Japan and South Korea?
No account or registration is required to buy. Your plan arrives instantly by email and activation takes about 30 seconds. Turn on data roaming for the Lumo line once you arrive in Japan and South Korea to start using mobile internet.
Can I get a refund if I do not use my plan?
Unused eSIMs can be cancelled and refunded in full within seven days, as long as they have not been activated. Once an eSIM has been activated it is no longer refundable.
Which eSIM is best for both Japan and Korea?
Look for a plan that names networks in both countries and says what happens after any daily limit. Lumo's Japan and South Korea eSIM uses two networks in each country: KDDI/au and SoftBank in Japan, and SK Telecom and LG U+ in South Korea. It connects to 5G wherever the network offers it.
Which is the best eSIM for multiple countries?
The one whose country list matches your whole route. Fewer countries usually means a lower price and more networks per country. For Japan and South Korea only, a two-country plan is the best fit. If you add China, Hong Kong, Taiwan or Southeast Asia, a regional Asia plan covering all of them is simpler than stacking country plans.
Which eSIM is best for traveling to Japan and China?
One that lists China mainland in its coverage. The two-country plan doesn't, but this page also sells wider options that do: a Japan, China and South Korea plan, and Asia plans that add Hong Kong, Taiwan and more. Pick one of them in the plan options above.
What is the downside of an eSIM?
For a Japan and Korea trip, three things matter. Your phone must support eSIM and be carrier-unlocked. The eSIM is internet only: there's no Japanese or Korean phone number, calls or texts. And it needs internet to install, so set it up at home before you fly. One more rule: never delete it to troubleshoot, because a deleted eSIM usually can't be reinstalled.
Which is better for Japan, Ubigi or Airalo?
Both work well in Japan. Ubigi uses NTT docomo and KDDI and lets you buy data in its app without Wi-Fi. Airalo uses KDDI/au and SoftBank. Tokyo Cheapo's 2025–26 tests in Tokyo averaged 235 Mbps for Airalo and 162 Mbps for Ubigi. If your trip includes Korea, note that Ubigi sells Japan + South Korea only as a $6-a-month subscription with a three-month minimum, and Airalo covers both only through its 18-country Asia plan (10 GB for 30 days, $25). Prices as of 23 September 2026.
Is Airalo or Simify better?
For a trip covering Japan and Korea, Airalo. Simify's Asia eSIMs leave out Japan, so its only plan covering both is Unlimited Global, 128 countries at $33.60 for 7 days on sale. Airalo's 18-country Asialink covers both: 10 GB for 30 days is $25, or $49 for 15 days unlimited. For one country, Simify's unlimited Japan and Korea plans were cheaper on sale: $21 for 7 days, against Airalo's $26.50 (Japan) and $29 (Korea). But Simify has no top-ups and publishes no fair-use limit. Prices as of 23 September 2026.
Does the eSIM work on the ferry between Busan and Fukuoka?
The eSIM uses land-based mobile networks, so it works in port and near the coast, but not reliably at sea. Download what you need before boarding. It reconnects on its own when you arrive.
Do I need to register my passport to use it?
No. Buying needs only an email address, and there's no ID check.
[ / More ]
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