China, Japan & South Korea eSIM Data Plans

3 GB / 30 days
CHF 10.00
China, Japan & South Korea eSIM Data Plans

China, Japan & South Korea eSIM Data Plans

CHF 10.00
4.7/5 3,872 traveller reviews
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No passport, no SIM swap
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Network & coverage

Stay connected across China, Japan & South Korea

One eSIM for mainland China, Japan and South Korea — the classic East Asia trio on a single plan.

Countries included
ChinaJapanSouth Korea
Choose your data

Pick the plan that fits your trip

3 GB
30 days
A short trip — maps, messaging and ride-hailing.
5 GB
30 days
A week away — daily chat, photos and navigation.
MOST POPULAR
10 GB
30 days
Two weeks of travel — social media, maps and video calls.
20 GB
30 days
Heavy use or a full month — streaming, hotspot and remote work.
Traveller's guide

Staying connected in China, Japan & South Korea — what to know

Covers the three big East Asian destinations without swapping SIMs as you move between them.

Crucially, in mainland China your data breaks out internationally, so Google, WhatsApp and Instagram work with no VPN needed — and Japan and Korea offer some of the fastest 5G on earth.

What's included

Everything you need in China, Japan & South Korea

One eSIM, 3 countries
Cross between them freely — no SIM swapping, one plan for the whole trip.
Flexible data plans
From 3 GB to 20 GB — pay only for what you need.
4G/5G network
Auto-connects to the strongest local networks for the best signal.
Instant delivery
Your QR code arrives by email in seconds — no shipping, no wait.
Top up anytime
Running low? Add data in seconds — same eSIM, no reinstall.
Works on arrival
Validity starts on first connection — install ahead with zero waste.
Device support

Works on your phone

Almost every phone from the last few years supports eSIM. Not sure? Dial *#06# — if you see an EID number, you're good to go.

iPhone
iPhone XS, XR and every model since — including all iPhone 11, 12, 13, 14, 15 and 16.
Samsung Galaxy
Galaxy S20 and newer, Z Flip / Z Fold, Note 20, and most A-series from 2021 on.
Google Pixel
Pixel 3 and newer (Pixel 3a and later on all major networks).
Other Android
Most modern flagships from Motorola, OnePlus, Huawei, Oppo and more.
Why eSIM

AeroSims vs a local SIM vs roaming

AeroSims eSIM Local SIM Roaming
Ready before you land
Passport / ID needed None Required None
Setup time Under 2 min 30–60 min queue Auto (costly)
Keep your home number
Top up remotely ~
Typical week of data Fixed low price Varies $50–200+
How it works

Connected in 3 simple steps

1
Buy your package
Choose your data size and check out in 60 seconds. QR code emailed instantly.
2
Scan and install
Settings → Cellular → Add eSIM → scan the QR code. Under 2 minutes, done at home.
3
Land in China, Japan & South Korea and connect
Switch on your eSIM and you're online from the first minute — no queue, no roaming.
FAQ

Questions, answered

Will the China, Japan & South Korea eSIM work on my phone?+
Yes, as long as your phone supports eSIM and is carrier-unlocked. That covers iPhone XS and newer, Samsung Galaxy S20 and newer, Google Pixel 3 and newer, and most modern Android phones. Dial *#06# to check for an EID number.
How fast is the data in China, Japan & South Korea?+
Your eSIM connects to the strongest available local networks at 4G/5G speeds — fast enough for maps, video calls, streaming, social media and mobile hotspot.
Do I need a passport or registration?+
No. There's no ID check, no paperwork and no SIM registration. You buy online, receive a QR code by email, and install it yourself in under two minutes.
When does my plan start?+
Validity begins the moment your eSIM first connects to a network in China, Japan & South Korea — not at purchase. You can install it days ahead of your trip with zero waste.
Can I top up if I run out of data?+
Yes. Add more data to the same eSIM in seconds from your account — no new QR code and no reinstall needed.
Can I keep my normal number for calls and texts?+
Yes. The eSIM runs alongside your physical SIM, so your home number stays active for calls and bank codes while the eSIM handles data in China, Japan & South Korea.
What happens when my data runs out?+
Your connection simply pauses — no surprise bills, ever. Just top up to keep going, or buy a fresh package.
Can I use it as a mobile hotspot?+
Yes, tethering and hotspot are included, so you can share your connection with a laptop or a travel companion's phone.
Do Google and WhatsApp work in China with this regional eSIM?+
Yes. In mainland China your AeroSims data routes through an international gateway, so Google, WhatsApp and Instagram work past the Great Firewall with no VPN. In Japan and South Korea everything works normally too.
Ready to explore China, Japan & South Korea?

Choose your data above and get instant access — delivered to your inbox in seconds.

3–20 GB · 4G/5G · instant delivery