J-FITSIM Prepaid SIM 30GB/month Available for up to 25 months
Regular price32,800
円(税込)
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商品説明文
[About this product]
This is a prepaid SIM card exclusively for high-speed data communication on the Rakuten Mobile network that can be used for up to 25 months, with the first month free.
In Rakuten Mobile network areas, you can use up to 30GB of 5G/4G high-speed data communication per month.
After using 30GB/month, your data speed will slow down to 200kbps, but will return to normal on the 1st of each month.
This SIM card does not support voice calls.
Prepaid SIM card using Rakuten Mobile network
- This product is a prepaid SIM card exclusively for high-speed data communication on the Rakuten Mobile network that can be used for up to 25 months.
In Rakuten Mobile network areas, you can use up to 30GB/month of 5G/4G high-speed data communication. After using 30GB/month, the communication speed will slow down to 200kbps, but will return to normal on the 1st of each month. Voice calls cannot be made with this SIM card.
- For partner lines, you can use up to 3GB of 4G high-speed data communication in partner line areas, but the maximum amount of high-speed data available domestically is 30GB combined for Rakuten lines and partner lines.
For example, if you use 28GB in the Rakuten Mobile network area, you can use 2GB in the partner network area. Please note that partner networks may become unavailable due to the termination of the roaming agreement between Rakuten and its partners.
- Regarding use overseas: When overseas, you can use up to 2GB in areas where Rakuten Mobile lines are available.
As of March 2025, it is available in the following 244 countries and regions. In addition, the maximum data volume overseas is 30GB when using Rakuten Mobile lines, partner lines, and overseas combined. Please check the Rakuten Mobile official website for details.
Iceland, Ireland, USA (Hawaii), USA (mainland), UAE, Andorra, UK, Italy, India, Indonesia, Estonia, Australia, Austria, Netherlands, Qatar, Canada, Cambodia, South Korea, Cyprus, Greece, Guadeloupe, Guam, Kuwait, Croatia, Saipan, Gibraltar, Singapore, Switzerland, Sweden, Spain, Slovakia, Slovenia, Thailand, Taiwan, Czech Republic, China, Denmark, Germany, Turkey, New Zealand, Norway, Hungary, Philippines, Finland, Brazil, France, French Guiana, Bulgaria, Vietnam, Peru, Belgium, Poland, Portugal, Hong Kong, Macau, Malta, Martinique, Malaysia, South Africa, Myanmar, Mexico, Morocco, Latvia, Lithuania, Liechtenstein, Romania, Luxembourg, Reunion, Russia, etc.
- The product specifications of this product may be changed by Rakuten Mobile.
SMS authentication available
- Since it has an SMS receiving function, you can easily register apps that require SMS authentication, such as LINE, Instagram, and Uber Eats.

Rakuten Mobile's direct line speed
- You can enjoy stable communication at the line speeds that only Rakuten Mobile's direct line can provide, without going through an MVNO.
(Line speeds vary depending on location, time, and device, so please consider these figures as a reference only.)
Available devices
- This service can be used on devices that are compatible with the Rakuten Mobile network. Before purchasing, please check whether your device is compatible. For details on compatible models, please see the Rakuten Mobile official website.
- For iOS, iOS version 14.5 or later is required and is compatible with iPhone 6S to 16e. For Android, a compatible device with Android version 10 or later is required.
- Even if the product is compatible, if it was purchased overseas or imported from overseas, it may not be usable due to different specifications such as frequency.
Steps for use
- Once the product arrives, you can use it by following the steps below.
① Insert the SIM card into the device you are using. It is a multi-cut SIM, so it can accommodate any SIM size. Cut the SIM into the appropriate size and insert it into the SIM card slot of the device.
②The APN will be automatically set for devices that are compatible with the Rakuten Mobile network. You can use the service by rebooting the device with the SIM inserted.
3) APN settings may be required depending on the device. In that case, please set the APN manually. Please check the APN information on the Rakuten Mobile official website.
Recommended for these people
- It is recommended for children, the elderly, foreigners in Japan, those who have returned to Japan temporarily, and those using it as a secondary line.
Excellent cost performance
- If you use the first month free and continue for 25 months, the cost per GB/month for the 3GB version will be approximately 144 yen/GB/month, making it an extremely cost-effective product.
You can extend the usage period
- You can continue to use this product by applying for an extension on your phone number before the expiration date.
You can extend your subscription by following the extension instructions sent via SMS approximately one month before the expiration date, or by purchasing an extension version on this website.
The subscription period is one year, and you can extend it for the following year by completing the renewal procedure.
troubleshooting
- SIM is not recognized ① If the information (APN/profile) of the SIM used previously remains, the new SIM will not be recognized, so please delete the information (APN/profile) of the old SIM. (For iOS, you can delete the old profile from the settings screen by going to Settings > General > Delete profile. This may vary depending on the model.) (For Android, you can delete the old APN from the settings screen by going to Settings > Network & Internet > Mobile Network > More Information > Access Point Name > Select the access point name > Select ... in the upper right > Select Discard or Delete. This may vary depending on the model.) After deleting the information (APN/profile) of the old SIM, you can turn off the device, reinsert the SIM, and restart the device to use it. Depending on the device, you may need to set the APN. In that case, please set the APN manually. Please check the APN information on the Rakuten Mobile official website.
②Please check whether your device is compatible with the Rakuten Mobile network.
For details on compatible models, please check the Rakuten Mobile official website.
- This SIM is provided by Rakuten Mobile, which was unable to use 30GB, so you will generally not be unable to use the indicated capacity. Please note that in the following cases, the capacity may not be displayed when checking the data capacity of the device.
1) When using tethering (a device other than the one with the SIM card inserted is using data)
2) Communication between background apps
- If you are using a model other than a Rakuten Mobile compatible model where the phone number cannot be confirmed on your smartphone, the phone number may be displayed as "unknown" and you may not be able to confirm the phone number on your smartphone.
There are three lines of numbers on the back of the SIM card, and the 11 digits in the middle are your phone number, so please check it here.