ご使用のブラウザは現在JavaScriptが無効になっています。
ページが正しく表示されない場合があるため、JavaScriptの設定を有効にしてください。

Why you should use
J:COM MOBILE

New customers

New Customers
Sign Up

Current customers

Current Customers
Various procedures

Troubleshooting/
Inquiries

Smartphone fee
simulation

How to apply

New arrival!

Google's AI smartphone

Ease of use,
Affordable price

J:COM MOBILE has many customers
You've been selected!

Source: MMD Research Institute's "MVNO Market Share and Satisfaction Survey, September 2024" Comparing the percentage of respondents who answered "I use it as my main phone" among seven low-cost smartphone companies in February and September 2024. Survey period: September 13th to September 24th, 2024 (n=3,403)

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	980 yen (1,078 yen including tax)
Recommended 5GB 10GB	1,480 yen (1,628 yen including tax)
Attention! 10GB 20GB	1,980 yen (2,178 yen including tax)
20GB 30GB	2,480 yen (2,728 yen including tax)

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.

View pricing plans

Smartphone savings calculator

Product/SIM

Low-cost SIM

iPhone

iPhone SE
(3rd generation)
*Web sales have ended

Android

See list of smartphones

Options

Unlimited calls

This is a service where domestic calls of up to 5 minutes or 60 minutes at a time can be made free of charge.

Device warranty

In the unlikely event of a malfunction, breakage, water leakage, etc., we will deliver a replacement unit with just one phone call.

See options

Coverage available even after purchases of devices
that have been on the market for five years or less!

Easy online
procedures

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.

See more about the sign up process

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.

Learn more about support we provide

Current subscribers

We will gladly to let you know about upgrades for devices and plans.

See more about procedures

eSIM for international travel

If your smartphone supports eSIM, you can easily, cheaply, and comfortably use the internet in over 200 countries and regions. You can also use an eSIM for overseas travel at a 10% discount by using a special code.

See more eSIMs for international travel

Recommended as a set/
Popular services

Insurance

Breakdowns, damage, etc.
Prepare for smartphone emergencies

Net

Super fast internet with optical fiber

electricity

Convenient, all in one place

Campaigns/benefits

Promotions/Benefits

Customer feedback

Cheap and connected
A safe smartphone

I like J:COM MOBILE. Although the price is low, the connection is stable.

20s/female
I signed a contract for my child.

By subscribing to J:COM NET's Wi-Fi, I can enjoy the internet and games in the comfort of my home. Also, last month I signed up for a new smartphone for my child, and it's cheap so it's safe for my family budget. I am also considering switching to a carrier line for my family.

40s/Female
I'm glad the data capacity has increased.

The amount of data you can use on your smartphone (GB) has been increased for free starting from February. I'm very happy because I've been able to save on communication usage up until now.

70s/female
Leave the troublesome initial settings to J:COM

I switched my smartphone to J:COM and the charges are now half the price. J:COM came to my house and took care of all the data migration operations.

60s/male
The line is stable and comfortable

I am using my smartphone at J:COM. There are no slow connections during the day or evening, and I am very satisfied with the service.

50s/Male
Music and videos on the go
Enjoy to the fullest

The great thing about J:COM MOBILE is that you can use J:COM Music and J:COM STREAM from anywhere without incurring communication charges.

40s/Male

If you are considering signing up or adding services

Sign Up information

New customers

New Customers
Sign Up

Current customers

Current Customers
Various procedures

Troubleshooting/
Inquiries

Smartphone fee
simulation

How to apply

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.

About initial setup support

Those applying for "J:COM MOBILE D Plan SIM Card" are not eligible.

Can you issue a receipt?

Please refer to the link below for details on the initial costs incurred at the time of contract.

Click here for initial cost

I want to know about support after joining

We offer a wide range of contact methods, from inquiries by phone or chat to guidance on our homepage with support information. In addition, by subscribing to Enkaku Support (550 yen per month (tax included)), you can receive remotely operated support from an operator.

About Engaku Support

Where can I check what plan I have?

You can check the plan you are subscribed to with J:COM MOBILE on My Page.

Click here for my page

How to check on My Page

Where can I see my call details?

You can check your J:COM MOBILE call details on My Page.

Click here for my page

How to check on My Page

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.

Click here for details

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)

How to transfer your LINE account (as of July 2017)

Useful column

We provide various information related to smartphones.

Learn more

[Notes]

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 remaining amount is valid until the end of the following month.
For 10GB/20GB (20GB/30GB after increase) plan

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.

Display is based on the Secondhand Goods Business Law

New arrival!

J:COM MOBILE has many customersYou've been selected!

Why you should use J:COM MOBILE

Rate plan

Product/SIM

Low-cost SIM

iPhone

Android

J:COM MOBILEReasons why we recommend it

Options

Coverage available even after purchases of devices that have been on the market for five years or less!

Easy online procedures

Complete Support

Current subscribers

eSIM for international travel

Recommended as a set/Popular services

Campaigns/benefits

Customer feedback

Cheap and connectedA safe smartphone

I signed a contract for my child.

I'm glad the data capacity has increased.

Leave the troublesome initial settings to J:COM

The line is stable and comfortable

Music and videos on the goEnjoy to the fullest

Sign Up information

FAQ

Useful column

J:COM MOBILE has many customers
You've been selected!

J:COM MOBILE
Reasons why we recommend it

Coverage available even after purchases of devices
that have been on the market for five years or less!

Easy online
procedures

Recommended as a set/
Popular services

Cheap and connected
A safe smartphone

Music and videos on the go
Enjoy to the fullest