# China, Japan & South Korea eSIM

> An eSIM for China, Japan & South Korea from SimKit costs US$3.59–US$39.00 (from 1 GB / 7 days up to 20 GB / 30 days). Plans run on China Unicom with 5G where available. You install it with a tap, usually under two minutes, with no physical SIM to swap, and can top up if you run low.

Source: https://simkit.app/esim/china-mainland-and-japan-and-south-korea · Prices checked 2026-11-02 · Currency: USD

## At a glance

- From: US$3.59
- Data: 1 GB–20 GB
- Validity: 7–30 days
- Networks: China Unicom
- 5G: yes, where the local network supports it
- Top-up: supported mid-trip
- Unlimited day passes: https://simkit.app/esim/china-mainland-and-japan-and-south-korea/unlimited
- Coverage: one plan across 3 destinations

## Countries covered

China, Japan, South Korea

## Plans

| Plan | Data | Days | Price (USD) | Top-up |
| --- | --- | --- | --- | --- |
| [1 GB · 7 days](https://simkit.app/esim/china-mainland-and-japan-and-south-korea/1-gb-7-days) | 1 GB | 7 | US$3.59 | Yes |
| [3 GB · 15 days](https://simkit.app/esim/china-mainland-and-japan-and-south-korea/3-gb-15-days) | 3 GB | 15 | US$8.89 | Yes |
| [3 GB · 30 days](https://simkit.app/esim/china-mainland-and-japan-and-south-korea/3-gb-30-days) | 3 GB | 30 | US$9.20 | Yes |
| [5 GB · 30 days](https://simkit.app/esim/china-mainland-and-japan-and-south-korea/5-gb-30-days) | 5 GB | 30 | US$13.73 | Yes |
| [10 GB · 30 days](https://simkit.app/esim/china-mainland-and-japan-and-south-korea/10-gb-30-days) | 10 GB | 30 | US$23.71 | Yes |
| [20 GB · 30 days](https://simkit.app/esim/china-mainland-and-japan-and-south-korea/20-gb-30-days) | 20 GB | 30 | US$39.00 | Yes |

## FAQ

### How much does an eSIM for China, Japan & South Korea cost?

China, Japan & South Korea eSIM plans from SimKit range from US$3.59 to US$39.00 depending on how much data and how many days you need. The entry plan is 1 GB for 7 days at US$3.59.

### Which China, Japan & South Korea eSIM plan is the best value?

Per gigabyte, the best value is the 20 GB plan for 30 days at US$39.00, which works out at about US$1.95 per GB. A plan you only half use is not a bargain, though, so size it to your trip. Every plan here supports top-ups, so it is safe to start smaller and add data if you run low.

### Which networks do China, Japan & South Korea eSIMs use?

SimKit China, 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, Japan & South Korea eSIM 5G?

Yes. Where China, 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 an eSIM for China, Japan & South Korea?

After you buy, open your order on the phone you'll travel with and tap the install button, or scan the QR code from another screen. The eSIM is ready in under two minutes. Activate it when you arrive in China, Japan & South Korea.

### When should I buy an eSIM for China, Japan & South Korea?

Any time before you travel. The plan's validity only starts when the eSIM first connects to a network in China, 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, 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 from your account, right in the browser, 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.

## How it works

1. Buy online; the eSIM is delivered instantly to your account.
2. Install it with one tap (or scan the QR code) on Wi-Fi before you fly.
3. It activates when it first connects to a network in China, Japan & South Korea, not when you pay.
4. Top up from your account if you run low, where the plan supports it.

Buy: https://simkit.app/esim/china-mainland-and-japan-and-south-korea