eSIM Japan has among the most extensive plans for travelers to Japan. Their plans are broken into three basic types: Unlimited data 3–30 days, 5G Unlimited Max 3–15 days, and fixed-data 7-to-30-day plans. The unlimited data 3–30 day plans have 1 GB per day and 2 GB per day options, and you can select from nine different trip lengths. All of their plans score fairly highly in terms of affordability and speed.
About eSIM Japan
eSIM Japan is a subsidiary of eSIM World, which provides eSIMs for several countries and regions worldwide. They offer general eSIMs for Japan, city-specific eSIMs, and regional eSIMs for customers traveling throughout Asia.
eSIM Japan’s highlights:
- Quick activation: We received a QR code immediately after payment
- Flexible trip lengths: A lot of variety to suit your stay in Japan
- Multi-country plans: Regional eSIMs are available if you’re traveling throughout Asia
- Unlimited data options: Plans with high daily limits or truly unlimited data
- Top up data: eSIM Japan’s fixed-data plans allow you to top up if you run out of data
How eSIM Japan works
You should receive a QR code via email shortly after payment. You can install and activate your eSIM by scanning the QR code or manually installing it. The process took us around 15 minutes. Depending on the product, your plan may start either after installation or after connecting to the local network, so be sure to check the details before installation. You’ll need to activate roaming on the eSIM to connect to the local network.
Setting up your eSIM Japan eSIM
- 1. Select and purchase your plan
- 2. Check your email for a QR code
- 3. Scan the QR code and follow the installation instructions (make sure you activate roaming)
eSIM Japan network speeds
Our tests
Average results taken from tests conducted in spring and summer 2024:
Network provider
eSIM Japan runs on Japan’s KDDI network. You should experience reliable connectivity in most parts of the country and fast 4G LTE speeds.
User reviews
While it might not be unbiased, the eSIM Japan website has an average of 4.5 stars from around 2000 reviews for their unlimited plans at the time of writing. Positive reviews cite ease of purchase and installation, while negative reviews mention problems experienced with speed and connectivity.
Alternatives to eSIM Japan
eSIM Japan’s huge vairety of packages and unlimited data options make them an appealing choice but it’s always smart to compare your options.
For a more detailed comparison of eSIM Japan with other eSIM providers for Japan, including up-to-date pricing and features, check out our comprehensive written guide.
Frequently asked questions
Can I make phone calls using eSIM Japan?
No, the current plans are data-only. For calls, consider using internet-based apps like WhatsApp or Skype. If you need traditional voice calling capabilities, other providers, such as Mobal, offer eSIMs with voice services included.
How is the coverage in rural areas?
Access to Japan’s KDDI network makes coverage generally good across Japan, including many rural areas. However, extremely remote locations might have limited service.
Can I top up if I run out of data?
Yes, if you’ve purchased a fixed-data plan, a top-up option is available.
Can I share my eSIM Japan eSIM between devices?
No, each eSIM is tied to a single device. You’ll need to purchase separate plans for additional devices. Alternatively, if you’re traveling with family or a small group, consider renting a pocket WiFi device to share.
Can I use tethering/hotspot with eSIM Japan’s eSIMs?
Tethering is possible if your device or network supports it. In some cases, you might need to update your device’s APN settings. eSIM Japan’s website recommends sharing data to other mobile devices instead of laptops for the best speeds.
While we do our best to ensure the information here is correct, it is subject to change.