China mainland & Japan & South Korea eSIM
3 destinations, one plan · from $4.37 · activates when you land
A China mainland & Japan & South Korea eSIM from SimKit costs $4.37–$47.50 USD (from 1 GB / 7 days up to 20 GB / 30 days). Plans run on China Unicom with 5G where available. You install it by scanning a QR code, usually under two minutes, with no physical SIM to swap, and can top up if you run low.
One plan covers all 3 destinations, including Japan, South Korea, China, with no swapping eSIMs at each border.
Prices checked July 17, 2026.
China mainland & Japan & South Korea eSIM data plans
7 days
15 days
30 days
Tap a data amount for full plan details. Prices update hourly. You’re charged the exact amount shown at checkout.
No risk in buying early. Your plan activates when it first connects in any of the 3 covered destinations, not when you pay, so you can buy the moment you book your trip. Delivered instantly by QR code, with secure checkout by Stripe. If you can’t get connected, we’ll help you fix it or refund you.
Countries covered by the China mainland & Japan & South Korea eSIM
One eSIM, 3 destinations. Tap a country for its dedicated plans.
Instant delivery
Your QR code is ready the moment you pay. Install before you fly.
One eSIM for the whole trip
Cross borders freely. The eSIM hops to a local partner network in each country automatically.
Top up anytime
Running low mid-trip? Add data to the same eSIM in a couple of taps, on the web or in the app.
SimKit offers 6 China mainland & Japan & South Korea eSIMs, from 1 GB up to 20 GB of data, valid for 7–30 days across 3 destinations. Every plan is delivered instantly by QR code and activates when you arrive.
Frequently asked questions
Which countries does the China mainland & Japan & South Korea eSIM cover?
The SimKit China mainland & Japan & South Korea eSIM works in 3 destinations with one plan: China, Japan, South Korea.
Do I need a new eSIM when I cross a border?
No. The China mainland & Japan & South Korea eSIM switches to a partner network in the next country automatically. Same plan, same data allowance, nothing to reinstall.
How much does a China mainland & Japan & South Korea eSIM cost?
A China mainland & Japan & South Korea eSIM from SimKit ranges from $4.37 to $47.50 USD depending on how much data and how many days you need. The entry plan is 1 GB for 7 days at $4.37.
Which networks does a China mainland & Japan & South Korea eSIM use?
SimKit China mainland & Japan & South Korea eSIMs connect to China Unicom, with 5G available where the network supports it. You get the same coverage as a local SIM without swapping anything physical.
Is the China mainland & Japan & South Korea eSIM 5G?
Yes. Where China mainland & Japan & South Korea's networks offer 5G, SimKit eSIMs use it, falling back to 4G/LTE elsewhere. Speeds depend on your device and local coverage.
How do I install and activate a China mainland & Japan & South Korea eSIM?
After you buy, SimKit shows a QR code. Scan it in your phone's cellular settings (or install it straight from the SimKit app) and the eSIM is ready, typically in under two minutes. Activate it when you arrive in China mainland & Japan & South Korea.
When should I buy a China mainland & Japan & South Korea eSIM?
Any time before you travel. The plan's validity only starts when the eSIM first connects to a network in China mainland & Japan & South Korea, so you can buy as soon as you book, install on Wi-Fi at home, and it activates when you land.
Can I top up my China mainland & Japan & South Korea eSIM if I run out of data?
Yes. If you run low, you can add more data to the same eSIM in a couple of taps, on the web or in the SimKit app, without buying a new one or changing your number.
Will the eSIM work in my phone?
Most phones from 2018 onward support eSIM (iPhone XS and later, recent Google Pixel and Samsung Galaxy models) and must be carrier-unlocked. If your phone shows an "Add eSIM" option in settings, you're good.