plan change

Please apply using the dedicated application form.

If you have multiple line contracts or would like to apply for Saikyo Young Wari, please contact us by phone.
Click here for details

Rate plan

Data capacity	1 GB	5GB	10GB	20GB
Date Mori When applied	5GB J:COMサービスとセットでデータ増量	10GB	20GB	30GB
Saikyo Young Wari When applied	-	6 months 500 yen (550 yen including tax)	6 months 1,000 yen (1,100 yen including tax)	6 months 1,500 yen (1,650 yen including tax)
monthly fee	980 yen (1,078 yen including tax) This price all the time!	1,480 yen (1,628 yen including tax)	1,980 yen (2,178 yen including tax)	2,480 yen (2,728 yen including tax)
after speed limit speed	maximum 200kbps	maximum 200kbps	maximum 1Mbps_	maximum 1Mbps_
Data carryover	Remaining data capacity will be used in the next month carry over automatically

About J:COM MOBILE A Plan ST/SU

1GB is 5GB with Date Mori data, 5GB is 10GB with additional data, 10GB is 20GB with additional data, and 20GB is 30GB with additional data. Click here for applicable conditions
Separate universal service fees, telephone relay service fees, call charges, SMS service charges, etc. are required.
The monthly fee will be the price after Saikyo Young Wari application ends.
Click here for the application conditions for Saikyo Young Wari

Overview of Date Mori

View J:COM MOBILE A plan

Data capacity	1 GB	5GB	10GB	20GB
Long-term type S	980 yen (1,078 yen including tax)	2,980 yen (3,278 yen including tax)	3,980 yen (4,378 yen including tax)	4,980 yen (5,478 yen including tax)
Standard type	1,380 yen (1,518 yen including tax)	3,680 yen (4,048 yen including tax)	4,680 yen (5,148 yen including tax)	5,680 yen (6,248 yen including tax)

Prices as of February 17, 2021. Discounts are not reflected in the displayed amount.

Please check My Page for the plan you are currently enrolled in.

Plan change flow

Step 1

Check your current plan

You can check your current plan, billing amount, and installment payment status for your device on My Page or the J:COM MOBILE app.

My page is here

Click here to download the app

Step.2

Apply online

Please use the dedicated application form to apply for a plan change.

J:COM Personal ID (contractor ID) is required. Please log in and complete the procedure.

If you have multiple line contracts or would like to apply for Saikyo Young Wari, please contact us by phone.

AM 9:00~PM 6:00 [Open all year round]

eSIM plan change

How to change eSIM data capacity

If you want to change the data capacity of eSIM, please apply from the button below.

Those who change from SIM Card to eSIM

If you want to change from SIM Card to an eSIM, please apply by phone.

AM 9:00~PM 6:00 [Open all year round]

Step.3

Content confirmation/end of change

At a later date, we will contact you and carry out the procedures for the change.

Please apply using the dedicated application form.

Notes on changing plans

If you are subscribed to "J:COM MOBILE A Plan" and want to change from your current plan to "J:COM MOBILE A Plan ST/SU", there are some things to keep in mind.

There are no contract cancellation fees or other fees associated with plan changes.
Due to the plan change, the discount currently applied to "J:COM MOBILE A Plan" will end. Therefore, if you currently have a device discount applied to your device payment (when you sign up for a new subscription) and have an installment remaining, after you change your plan, the device discount will no longer apply and you will be able to pay the remaining device fee without any discount. Payment will be made.
The new plan "J:COM MOBILE A Plan ST/SU" does not apply the smartphone more program, so you will not be able to use the half price assist after changing the plan.
Customers who wish to apply for "J:COM MOBILE Saikyo Young Wari" cannot complete the procedure online. The policy can be applied by submitting documents proving that the policyholder/user is 26 years of age or younger. If you wish to apply, please contact J:COM Customer Center (0120-999-000). Click here for detailed application conditions for Saikyo Young Wari

[About the amount including tax]

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