Same price even with 5G

monthly fee

The price remains the same even with 5G!
This price for everyone ♪

Data capacity
monthly fee
set discount applicable
6 months
Until May 31, 2026
After June 1, 2026
1GB
5GB
980yen
(1,078 yen including tax)
1,280yen
(1,408 yen including tax)
5GB
10GB
1,480yen
(1,628 yen including tax)
1,780yen
(1,958 yen including tax)
500yen
(550 yen including tax)
10GB
20GB
1,980yen
(2,178 yen including tax)
2,280yen
(2,508 yen including tax)
1,000yen
(1,100 yen including tax)
20GB
30GB
2,480yen
(2,728 yen including tax)
2,780yen
(3,058 yen including tax)
1,500yen
(1,650 yen including tax)
\NEW/
50GB
60GB
3,480yen
(3,828 yen including tax)
3,480yen
(3,828 yen including tax)
2,500yen
(2,750 yen including tax)
Data capacity
1GB
5GB
10GB
20GB
\NEW/
50GB
5GB
10GB
20GB
30GB
60GB
monthly fee
Until May 31, 2026
980yen
(1,078 yen including tax)
1,480yen
(1,628 yen including tax)
1,980yen
(2,178 yen including tax)
2,480yen
(2,728 yen including tax)
3,480yen
(3,828 yen including tax)
After June 1, 2026
1,280yen
(1,408 yen including tax)
1,780yen
(1,958 yen including tax)
2,280yen
(2,508 yen including tax)
2,780yen
(3,058 yen including tax)
3,480yen
(3,828 yen including tax)
When set discount is applied
(6 months)
500yen
(550 yen including tax)
1,000yen
(1,100 yen including tax)
1,500yen
(1,650 yen including tax)
2,500yen
(2,750 yen including tax)
  • The discount rate will continue even after June 1, 2026. After the discount period ends, a new discount rate will be applied.
    The conditions for applying the set discount (J:COM Mobile) arehere
  • In conjunction with this change, the optional "nuisance call and message blocking" service will be offered free of charge from June. For more information, click here.
Data Carryover Any unused data will be used the following month.
Automatically carry over
Voice calls
(Domestic calls)

Unlimited calls (5 minutes/call)

500yen
(550 yen including tax)

Unlimited calls (60 minutes/call)

1,500yen
(1,650 yen including tax)

Domestic calls: 20 yen (22 yen including tax)/30 seconds

  • Separate charges apply for the broadband universal service fee, telephone universal service fee, telephone relay service fee, call charges, SMS communication charges, etc.
  • The monthly fee will be the price after the set discount (J:COM MOBILE) is no longer applied.
  • A contract administration fee of 3,000 yen (3,300 yen including tax) is required (excluding A Plan SU). However, if you sign up for other J:COM services at the same time, the contract administration fee for J:COM MOBILE may be waived.
  • With Date Mori, 1GB will be increased to 5GB, 5GB will be increased to 10GB, 10GB will be increased to 20GB, 20GB will be increased to 30GB, and 50GB will be increased to 60GB. See here for applicable conditions.
Overview of Date Mori
Increase your data by signing up for mobile and one of J:COM 's other services (electricity, television, internet *including WiMAX, Landline)
  • Eligibility is automatically applied.
  • Applies to the whole family.
  • Surplus data capacity can be carried over.
  • For eSIM (A Plan SU), this only applies if J:COM personal ID and subscriber ID are the same.
Click here for details on Date Mori close

J:COM MOBILE
Easy to switch!

contract cancellation fee
pear

contract period binding
pear

WEB application only
No initial cost

\Monthly fee is cheaper/

Great value from the first line
Simple price plan

Same price for 5G!
Choose a price plan that suits you

iconSmartphone savings calculator

About 5G

5G makes everyday life more convenient than ever
With 5G, you can easily watch large videos!

With 5G, new frequency bands will become available for mobile communications, and it is said that in the future, communication speeds will be about 20 times faster than 4G LTE. Download latency is also greatly reduced.

  • "Approximately 20 times" is the maximum value according to technical standards and differs from the actual usage speed.

Learn more about 5G

5G area

You can check the areas where 5G is available.

Service area map (to au site)
★5G is available in some areas.

Application flow

Easy online application!
Even if you don't have to go to the shop and wait,
Complete the purchase process at home.

Sign Up

Pick up your device

Perform initial setup

View application flow

FAQ

We introduce frequently asked questions from customers.
If you have any questions, please contact us by phone or chat.

What is 5G?

For details, please check here.

Can I still use the SIM?

Yes, if you are a J:COM MOBILE subscriber and change your service to 5G, you can use the same SIM Card to use the 5G service.

Limited to J:COM MOBILE A plan (voice + data) subscribers.

5G communication requires a 5G terminal.

[Notes]

[About 5G communication]

  • 5G is provided in some areas. For details, visit the au homepage.
  • A 5G-compatible device is required to use this service.
  • D Plan does not offer 5G.
  • All images, screens, and illustrations are images.
  • Construction costs/fees/initial costs are required for use/cancellation of each service and service changes.
  • Products and discount/gift contents and period are subject to change without notice.
  • Applications for J:COM services other than "J:COM MOBILE" are limited to those living in the J:COM area. Please note that even if you are within the J:COM area, you may not be able to use the service depending on your address or building, or the conditions and period for applying the discount may vary.
  • Company names, product names, and service names are registered trademarks or trademarks of each company. Including some pending applications.
  • iPhone is a trademark of Apple Inc., registered in the U.S. and other countries. The iPhone trademark is used under license from Aiphone Co., Ltd. TM and © 2025 Apple Inc. All rights reserved.
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[About the amount including tax]

  • Consumption tax differences may occur due to changes in the consumption tax rounding method under the invoice system.