China, Japan & South Korea eSIM plansBuy online, install in one tap, land connected · 2026
Tokyo, Seoul, and Shanghai in one trip is East Asia's classic triangle — and a China, Japan & South Korea eSIM runs it on a single plan. Step off the plane at Tokyo Haneda, Seoul Incheon, or Shanghai Pudong and the first thing you need is data: in this corner of Asia, everything runs through your phone.
Plans and prices for China, Japan & South Korea
Compare plans and find the perfect fit for your trip
What's covered
3 countries· China mainland & Japan & South Korea
eSIM in China, Japan & South Korea
A China, Japan and South Korea eSIM covers all three countries on one plan. Buy it before you fly, tap the install link from your email, and your phone sets the eSIM up itself at home — no airport kiosk, no store visit. When you hop from Osaka to Seoul, or ride the ferry from Busan to Fukuoka, your data keeps working. No SIM swapping at each border, no hunting for WiFi in a new city.
WHY CHOOSE AN eSIM FOR China, Japan & South Korea?
Airport SIM Problems
- Long queues after a tiring flight
- Language barriers and confusing plans
- Overpriced tourist rates
- Limited shop hours
- Need passport copies and forms
Lumbus eSIM Benefits
- Buy before you fly, activate on landing
- One tap installs it — link in your inbox seconds after checkout
- Up to 10x cheaper than roaming
- 24/7 worldwide support
- No paperwork, no queues
Why choose Lumbus over Airalo or Holafly?
We're not just another eSIM provider. Here's what makes Lumbus different.
24/7 Global Support
Real humans available around the clock, worldwide. No chatbots, just genuine help.
Faster Checkout
Apple Pay, Google Pay, no account required. Buy in under 60 seconds.
Better Prices
Often cheaper than competitors with the same quality networks.
Smoother Installation
One-tap install on iOS 17.4+. Clear step-by-step guides for all devices.
Flexible Plans
Data options from 500MB to unlimited with validity up to 180 days. Find the perfect fit for your trip.
Works At Home Too
Use as backup data at home when your main network goes down.
Staying connected in China, Japan & South Korea
Practical advice for using mobile data in China, Japan & South Korea.
Install before you board
Buy online, install it with one tap from the link in your email at home on WiFi — or scan the QR code if you prefer — and skip the airport counters. Incheon, Haneda, and Pudong are huge — walking out with working data makes arrival trains and pickups far easier.
Get Naver Map for Korea
Google Maps gives limited walking and driving directions in South Korea. Download Naver Map or KakaoMap before you arrive in Seoul, and use Kakao T for taxis — it's how locals ride.
Set up China apps first
In mainland China, Alipay and WeChat Pay cover most everyday payments, and Didi is the main ride-hailing app. Download and register them before you land in Beijing or Shanghai.
Cross borders without swapping
One eSIM for China, Japan and South Korea keeps working as you move between the three. Fly Tokyo to Seoul or Seoul to Shanghai and reconnect on arrival — no new SIM, no airport kiosk queue.
Prep for bullet trains
The Shinkansen between Tokyo and Osaka and the KTX from Seoul to Busan pass through long tunnels where signal can drop. Download playlists, shows, and offline maps before boarding so the gaps don't matter.
China, Japan & South Korea eSIM FAQs
Common questions about using eSIM in China, Japan & South Korea
Popular destinations covered
All included in the coverage above — or grab a single-country eSIM if you're only visiting one.
More regional eSIMs
One eSIM for other multi-country trips.
Guides for this trip
How much data you need, how installation works, and what happens to your number — each answered in a few minutes.
One eSIM for Multiple Countries: Regional vs Country Plans
Visiting several countries on one trip? When one regional eSIM beats buying a plan per country — and when it doesn't. The real arithmetic for Europe, Southeast Asia, North America and the Gulf, plus the coverage-list traps to check before you pay.
How Much Data for a Trip? Per-App Use and the Daily Formula
How much data do you need for travel? Work out how many GB you'll use per day, see what Google Maps, WhatsApp and Instagram really cost per hour, and pick the right eSIM plan size.
How to Install an eSIM on iPhone & Android
Step-by-step guide to installing an eSIM on iPhone and Android with the one-tap install link — no QR scan needed on iOS 17.4+ and Android 10+ — plus the QR code and manual-entry backups, and how to enable Data Roaming.
eSIM With No Phone Number: What Breaks (SMS Codes, WhatsApp)
Travel eSIMs are data-only and have no phone number of their own. Here's what that means for WhatsApp, iMessage, SMS verification codes and calls home — and how to avoid a roaming bill.
Ready for China, Japan & South Korea?
Get instant connectivity. No SIM cards, no queues, no hassle.