Precautions when making a contract
About the use of persons under the age of 18
If a youth under the age of 18 uses J:COM MOBILE, it is necessary to set up a filtering service.
J:COM will provide "Anshin Filter for J:COM" free of charge to eligible users.
It is mandatory by law for young people to subscribe to a filtering service. On April 1, 2009 (Wednesday), the ``Act on Creating an Environment for Youth to Use the Internet Safely and Securely'' went into effect.
- eSIM users, users over the age of 18, and corporate contracts are not eligible.
- Click here for details on the Law Concerning the Development of an Environment Where Youth Can Use the Internet Safely and Securely
About payment
In principle, J:COM MOBILE charges can only be paid by credit card. Acceptable credit cards are those with the following marks.
Debit cards are not accepted.
It can be used to pay for products (terminals, etc.) and monthly usage charges. Matters related to the date of withdrawal from the credit card settlement account and payment are based on the membership agreement stipulated by the designated credit card company and the terms and conditions and special agreements stipulated by the Company. In principle, please specify a credit card in the name of the contractor.
- If User J:COM and would like to use bank account transfer, you can also use bank transfer directly.
When using dual SIM
About notes
When using multiple SIM Card /eSIM lines on some smartphones (when using the dual SIM function), a data communication dedicated SIM line that cannot be used for voice calls can be used for "mobile data communication". If you set it as a line, you may not be able to make calls to emergency agencies (110/118/119).
You can make calls to emergency organizations by setting a "SIM line that allows voice calls" to the line for "mobile data communication".
We would like to ask customers who use the target models to be careful.
Select the target iPhone model
To customers using
We have confirmed that this issue will be resolved by updating to iOS 15.2 delivered on Tuesday, December 14, 2021.
After the update, please make a normal voice call (call to non-emergency organizations) by the customer's operation and confirm that the call function can be used without problems.
In addition, customers using iOS 15.1.1 or lower can make calls to emergency organizations by the method described above (setting a "SIM line that allows voice calls" to the line for "mobile data communication"). .
(As of December 2021)
- <iPhone device>
- iPhone XS, iPhone XS Max, iPhone XR, iPhone 11, iPhone 11 Pro, iPhone 11 Pro Max, iPhone SE (2nd generation), iPhone 12 mini, iPhone 12, iPhone 12 Pro, iPhone 12 Pro Max, iPhone 13 mini, iPhone 13, iPhone 13 Pro, iPhone 13 Pro Max
*15 models (as of September 2021)
- <Android device>
- There are no Android devices that are eligible for this service.