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. Japan travelers lean on Google Maps and train timetable apps. In South Korea, locals navigate with Naver Map and hail cabs with Kakao T. In mainland China, WeChat and Alipay handle everything from metro rides to street-food payments. Translation apps do the heavy lifting for menus and signs. Up to 10x cheaper than roaming with plans starting at $4.99.
Compare plans and find the perfect fit for your trip
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.
We're not just another eSIM provider. Here's what makes Lumbus different.
Real humans available around the clock, worldwide. No chatbots, just genuine help.
Apple Pay, Google Pay, no account required. Buy in under 60 seconds.
Often cheaper than competitors with the same quality networks.
One-tap install on iOS 17.4+. Clear step-by-step guides for all devices.
Data options from 500MB to 50GB with validity up to 180 days. Find the perfect fit for your trip.
Use as backup data at home when your main network goes down.
Practical advice for using mobile data in China mainland & Japan & South Korea.
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.
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.
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.
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.
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.
Common questions about using eSIM in China mainland & Japan & South Korea
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