Multi-country plan · 2 countries
Japan and South Korea eSIM — 20 GB, 90 Days
One eSIM for both countries.
20 GB of eSIM data for 90 days in Japan and South Korea, for $57 USD. Hotspot and top-up supported. Instant email delivery, install in minutes.
- Instant QR delivery
- No voice or SMS
- Top-up available
- Hotspot allowed
[ / Countries ]
20 of 26 countries in your plan.
Every country this plan covers, with the networks it uses there. Countries on your route are highlighted.
- AustraliaOptus · Telstra5G
- BangladeshIn other plans on this page—
- CambodiaMetfone4G
- ChinaChina Unicom5G
- Hong Kongcsl4G
- IndiaJio · Vodafone · IDEA · AirTel4G
- IndonesiaTelkomsel5G
- IsraelPelephone5G
- JapanKDDI/au5G
- KazakhstanIn other plans on this page—
- KuwaitSTC5G
- KyrgyzstanIn other plans on this page—
- LaosIn other plans on this page—
- MacaoCTM5G
- MalaysiaMaxis · CelcomDigi · U Mobile5G
- New ZealandSpark4G
- PakistanTelenor3G
- PhilippinesGlobe5G
- Saudi ArabiaMobily5G
- SingaporeM1 · SingTel5G
- South KoreaSKTelecom5G
- Sri Lanka34G
- TaiwanIn other plans on this page—
- ThailandDTAC · TrueMove H5G
- UzbekistanIn other plans on this page—
- VietnamMobiFone · Viettel Mobile · Vietnamobile5G
[ / 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 ]
Other Japan and South Korea eSIM plans
17 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.
- Top-up available
Often cheaper for one country
Country plan
If your whole trip is in one country, its own plan can cost less.
Browse country plans →[ / 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 this plan cost?
1 prepaid eSIM plan on this page, from $57.00 USD — a one-off purchase with no contract and no subscription. Options on the same page differ by coverage or by speed, never by validity.
Which networks does a Lumo eSIM use in Japan and South Korea?
By option: 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. Coverage is 20 countries — where the data service works, and the operator names are the ones the network reports for each plan.
Is 20 GB enough for 90 days?
That works out at about 228 MB a day. As a guide, light messaging and maps use 1-3 GB, social and browsing 5-10 GB, and streaming or tethering 15 GB or more.
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.
When do the 90 days start?
When the eSIM is activated, which our terms count as the moment the profile is installed and provisioned on your device, or the moment it first connects to a partner network — whichever happens first. Install it close to your trip rather than the day you buy it, and turn on data roaming for the Lumo line once you arrive in Japan and South Korea. That same moment is when the plan stops being refundable, so installing is not a step you can undo.
Can I share this plan over a hotspot?
Yes. Every option on this page is recorded as supporting hotspot and tethering, so a laptop or a second phone can use the connection. Shared traffic comes out of the same allowance.
Can I add more data to this plan?
Yes. Every option on this page supports top-ups: add data from your Lumo dashboard while the plan is still valid, or buy a new plan and install it when you need it.
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.
[ / More ]
Other regional plans
Japan and South Korea. One QR code.
Japan and South Korea plans from $2.00. Delivered by email in seconds.
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