【Official Website】
No need to reissue your QR code.
Stay connected in Japan and abroad.
Even if you run out of data using maps, social media, videos, or translation apps, you can add more data anytime and stay connected in Japan.
Traveling to Korea, Taiwan, Thailand, the US, or Europe after Japan? Just add a regional plan and stay connected without buying a new SIM card.
No need to choose between "World A" and "World B". Just enter a country name, and we'll find the right plan for you.
Matched regions:Click to jump to the corresponding plan.
* All prices include tax.
*If additional data is purchased, data from your original plan will be used first.
* All prices include tax.
*If additional data is purchased, data from your original plan will be used first.
* All prices include tax.
*If additional data is purchased, data from your original plan will be used first.
* All prices include tax.
*If additional data is purchased, data from your original plan will be used first.
* All prices include tax.
*If additional data is purchased, data from your original plan will be used first.
* All prices include tax.
*If additional data is purchased, data from your original plan will be used first.
Add data by region and reuse remaining data in the same area.
Japan
Add more data online anytime.
Thailand
Traveling to another region, add an Asia plan and continue using it.
Japan
Use remaining data again in the same Japan region.
*Example only. Actual remaining data may vary depending on usage.
*A separate regional plan is required when using the service in another area.
Step 1
Select your preferred Japan plan or World plan from My Page or the website.
Step 2
Complete payment online.
Step 3
No setup required. Data is added automatically and ready to use.
Once topped up, the data is valid for 180 days.
Please check your data usage on your smartphone.
Once you have used up the data you topped up, it will become invalid. Please top up with new data.
An ICCID is the identification number of a SIM card.
Please apply for a Japan domestic plan first. After that, you can top up and use it worldwide.
Once data has been topped up, refunds are not available. Thank you for your understanding.
We do not send notifications, so please check your data usage yourself and top up when your remaining data is low.
Yes, tethering is available on compatible devices. However, using tethering may result in reduced connection speeds and increased battery consumption. For the best experience, we recommend using the eSIM directly on your smartphone whenever possible.
Yes, tethering is available.
Please contact NINJA WiFi Customer Support.
Email: [email protected]
Phone (Japanese): +81-50-5810-6932
Phone (English): +81-50-8882-5774
Business Hours: Monday to Friday, 10:00 AM – 7:00 PM (JST)
There is no limit to the number of top-ups. You can add data as many times as you need.
There are no data usage restrictions as long as you stay within your purchased data allowance.
*However, if unusually high data usage is detected within a certain period, your speed may be limited during congested hours.
From Japan to the World. Choose a Plan For Your Next Trip.
Add Data Now*No new setup or QR code scan required.
