For those who want to use an eSIM for traveling in Japan
This page provides a summary of the information you need
for those who want to use an eSIM when traveling in Japan.
- What is an eSIM?
- How is it different from a SIM card?
- Is my smartphone compatible?
- Is it really convenient for travelers?
If you have these questions,
reading through this page first will help you
decide whether or not you should use an eSIM.
What is an eSIM? (Easy explanation for beginners)
An eSIM is a
**”digital SIM” built into your smartphone.**
You don’t need to replace a physical SIM card;
you can add a mobile connection simply by scanning a QR code.
The features of eSIMs for travelers to Japan are as follows:
- Can be purchased and set up in advance
- No need to wait in line at the airport
- No need to remove or insert a SIM card
- No risk of loss
Why eSIMs are suitable for travelers to Japan
In many cases, eSIMs are especially convenient for traveling in Japan.
Available immediately upon arrival
You can use maps, translation, and route guidance from the moment you arrive in Japan.
No airport procedures required
No need to line up at the SIM counter or look for a pick-up location.
Good compatibility with iPhone
iPhone XR and later models are generally compatible with eSIMs.
Differences from SIM Cards
| Comparison items | eSIM | SIM Card |
|---|---|---|
| Advance preparation | Possible | Possible |
| Reception | Not required | Required |
| Replacement | Not required | Required |
| Risk of Loss | None | Yes |
| Compatible devices | Limited | Wide range |
If you are using a compatible device, an eSIM is easier to use.
Guide to eSIM compatible devices that can be used in Japan
iPhone
- iPhone XR and later models
- Almost all overseas iPhones are compatible
Android
- Google Pixel (relatively new models)
- Some Samsung Galaxy models
*Since there are large differences between Android models,
please check in advance to see if “eSIM” or “add mobile plan” is displayed.
How to choose an eSIM for travelers to Japan
When choosing an eSIM, check the following points:
- Usage period (number of days of stay)
- Data capacity
- Network used (docomo / au / SoftBank)
- Whether tethering is supported
If you are unsure of the amount of data you need,
please refer to How much data do you need for a SIM card when traveling in Japan? [2026 Edition]
.
Flow from purchasing an eSIM to starting use
- Purchase an eSIM for travelers to Japan online
- Receive the QR code by email
- Read the QR code in a Wi-Fi environment
- Switch lines and start using after arriving in Japan
* Please be careful not to delete the QR code.
Notes when using eSIM
- Wi-Fi environment is required for opening
- May not be reusable once deleted
- In many cases, it is data-only and does not come with a phone number
- Speed limit conditions vary depending on the plan
For detailed information on how to deal with problems,
please see Causes and solutions for when eSIMs cannot be used when traveling in Japan | Explanation by iPhone/Android [2026 Edition]
.
People who are suitable for eSIMs and people who are not
Suitable for
- iPhone User
- People who want to reduce luggage
- People who want to use communication immediately after arrival
People who are not suitable
- Using an eSIM incompatible device
- Worried about settings
In that case, you can consider other options from
Recommended SIMs and how to choose them for travelers to Japan [2026 Latest Edition]
.
Summary: eSIM is the easiest option if you have a compatible device
- eSIMs are very convenient for travelers to Japan
- Advance preparation reduces stress during travel
- The most important thing is to check whether your device is compatible
このページを読んで
「eSIMでいけそう」と感じた方は、
このまま自分の旅行スタイルに合ったプランを選んでください。
Recommended eSIM (to be filled in later)
* Will be replaced when affiliate is introduced
- Company A: eSIM for Travelers to Japan (Tentative)
- Company B: eSIM for short stays (tentative)