New customers
Contact us by phone
(Free call)0120-989-970
AM 9:00-PM 6:00 [open all year round]
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For User
Introducing recommended information
Why you should use J:COM MOBILE
Rate plan
5G for the same price!
Always get more data with Data Mori!
| Data capacity | Pricing |
|---|---|
|
Popular 1GB 5GB |
980yen (1,078 yen including tax) |
|
5GB 10GB |
1,480yen |
|
Attention! 10GB 20GB |
1,980yen |
|
20GB 30GB |
2,480yen |
- With Date Mori, 1GB will be increased to 5GB, 5GB will be increased to 10GB, 10GB will be increased to 20GB, and 20GB will be increased to 30GB. See here for applicable conditions.
- Separate universal service fees, telephone relay service fees, and call and SMS communication fees are required.
Smartphone savings calculatorProduct/SIM
Low-cost SIM
iPhone
Android
J:COM MOBILE
Reasons why we recommend it
- Reason 1
-
Your price doesn’t change when you sign up for a smartphone and other services!
Data Mori 5 GB 980 Yen/month ~ (Starting from 1,078 yen including tax)
- Reason 2
-
Excess data capacity can
carry over
without wasting anything! *1
- Reason 3
-
Fast speeds of up to
1 Mbps are available even when
data traffic is
over the speed limit! *2
- Reason 4
-
au 5G/4G LTE compatible
for seamless
connectivity nationwide*3
Options
Coverage available even after purchases of devices
that have been on the market for five years or less!
Easy online
procedures
Sign Up
Pick up your device
Perform initial setup
If you apply online, you don't have to go to the store and wait.
The purchase process can be completed at your home.
Complete Support
Our staff of specialists is here for you at our call center 365 days a year.
You don’t have to worry about a thing.
Current subscribers
We will gladly to let you know about upgrades for devices and plans.
Recommended as a set/
Popular services
Campaigns/benefits
Customer feedback
If you are considering signing up or adding services
Sign Up information
New customers
Contact us by phone
(Free call)0120-989-970
AM 9:00-PM 6:00 [open all year round]
FAQ
- Procedures such as contracting and changing models are cumbersome.
-
You can easily apply online. Visiting support is also available upon request.
You can apply for J:COM MOBILE online. You can complete the process from the comfort of your own home, so there is no need to go to a store and wait for a long time.
Once you receive your smartphone, you can receive free support if you wish. We will provide detailed instructions on how to use your smartphone, as well as the initial settings.
- Those applying for "J:COM MOBILE D Plan SIM Card" are not eligible.
- I want to transfer data such as my phone book to a new smartphone, what should I do?
-
Solve difficult settings at home. Leave the initial settings of your smartphone to Enkaku Support!
J:COM MOBILE provides free support that provides detailed instructions on initial settings, migration of phonebook data, instructions on how to use the service, etc. for those who wish to do so.
- Can I continue to use the email address I'm currently using on my J:COM MOBILE smartphone?
-
If you are using a free email service such as Gmail, you can continue to use it by logging in or setting up a new device.
Please note that if you are using an email address (domain) issued by some telecommunications companies, you will not be able to use it.
- There are some services that allow you to continue using carrier mail even after canceling your carrier. Please refer here for details.
J:COM MOBILE does not issue email addresses, so we recommend that you switch to a free email such as G-mail in advance.
- Can I carry over unused data usage?
-
Unused data traffic will be automatically carried over to the next month.
*The remaining amount is valid until the end of the following month.
If the upper limit is exceeded, the speed will be limited to 1Mbps or 200kbps depending on the plan you subscribe to. In addition to the data usage of your contract plan, you can also carry over any additional data usage you purchase to the next month.
Please check here for more information, including expiration dates.
- Can I continue to use LINE on my new device?
-
By completing the appropriate settings and procedures, you can continue to use the service on your new device.
Regarding account migration (handover) procedures, security is regularly strengthened, so please check the latest information on LINE's official blog before proceeding.
(*Please note that settings may be required before changing the model)
Useful column
We provide various information related to smartphones.
- The remaining amount is valid until the end of the following month.
- For 10GB/20GB (20GB/30GB after increase) plan
- Both voice calls and data communications can be used in au's 4G LTE area. 3G communication is not available.
Even within the service area, you may not be able to communicate or the communication speed may decrease.
Also, you may not be able to use it even if you are on a high floor of a high-rise building or condominium with a good view.
Please check the au homepage for the latest area information. Communication speed is a best effort service,
It does not guarantee a constant speed. It varies depending on the usage environment.
- The displayed communication speed is the maximum value according to technical standards and does not guarantee a constant speed. It varies depending on the usage environment.
[About the amount including tax]
- Consumption tax differences may occur due to changes in the consumption tax rounding method under the invoice system.
