Customers using 3G services

Customers using 3G services
セット割
シニア割
Features
monthly fee
Terminal list
J:COM MOBILE Application
iconSmartphone savings calculator

As of Tuesday, March 31, 2026,
NTT DoCoMo's 3G (FOMA) service will be discontinued.

Customers using models that are exclusively for 3G lines will no longer be able to make voice calls or use data communications from Wednesday, April 1, 2026.

Customers using models that are exclusively for 3G lines will no longer be able to make voice calls or use data communications from Wednesday, April 1, 2026.

Compatible models and details here
You will be redirected to the NTT Docomo page.

Customers using models that are exclusively for 3G lines will no longer be able to make voice calls or use data communications from Wednesday, April 1, 2026.

Customers using models that are exclusively for 3G lines will no longer be able to make voice calls or use data communications from Wednesday, April 1, 2026.

Compatible models:
Learn more
You will be redirected to the NTT Docomo page.

Special campaign underway

他サービスとセットでおトクな割引！今ならスマホ10GB6カ月0円/月

J:COMなら!
はじめてのスマホ
でも安心

POINT 1 The initial settings
Free support Because
peace of mind!

Rest assured even if you are unsure about operation

If you wish, we will support you with the initial setup free of charge.
What's more, if you are an Enkaku Support subscriber, you can consult with our specialized staff as many times as you like about any problems you may have after signing up.

If you are 60 years old or older, you can receive 3 months of free​ ​support.

full support

POINT 2 au4G LTE compatible
Enjoy comfortable nationwide connectivity!*1

Low-cost SIM Awards

Best in Communication Speed (Quality) Category

J:COM MOBILE was recognized for its stable quality and won the top prize in the "Budget SIM Awards 2024 First Half Communication Speed (Quality) Category." It is characterized by its stable communication quality.

POINT 3Save on calling charges! Unlimited calls option

Recommended for those who make a lot of calls! Unlimited calls calling option that saves on calling charges

This service allows you to make unlimited domestic calls for free, up to 5 minutes or 60 minutes per call.
Recommended for those who make a lot of calls.

If you are 60 years old or older, you can get three months of Unlimited calls free of charge.

About Unlimited calls

POINT 4 ​Powerful blocking of spam calls and SMS

Powerful blocking of spam calls and SMS

By subscribing to nuisance call and message blocking, you can use your smartphone with peace of mind as you will be warned about nuisance calls and nuisance messages (SMS) such as bank transfer scams and malicious sales calls.

If you are over 60, you can block nuisance calls and messages. 3 months free For more information, Here

Nuisance calls and messages
About Blocks

POINT 5: Any unused data can be carried over.

Recommended for those who make a lot of calls! Unlimited calls calling option that saves on calling charges

Any unused data will be automatically carried over to the next month.

Any remaining points are valid until the next month.

J:COM MOBILE Application
iconSmartphone savings calculator

monthly fee

\ Now /
In combination with other services
​10GB Smartphone Data: 0 yen for 6 months ★ /month

Data capacity
monthly fee
1GB
5GB
980yen
(1,078 yen including tax)
5GB
10GB
1,480yen
(1,628 yen including tax)
0yen
10GB
20GB
1,980yen
(2,178 yen including tax)
500yen
(550 yen including tax)
20GB
30GB
2,480yen
(2,728 yen including tax)
1,000yen
(1,100 yen including tax)
＼NEW／
50GB
60GB
3,480yen
(3,828 yen including tax)
2,000yen
(2,200 yen including tax)
データ盛適用の場合
セット割適用時（6カ月）
Data capacity
1GB
5GB
10GB
20GB
＼NEW／
50GB
データ盛適用の場合
5GB
10GB
20GB
30GB
60GB
monthly fee
Regular price
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)
セット割適用時（6カ月）
0yen
500yen
(550 yen including tax)
1,000yen
(1,100 yen including tax)
2,000yen
(2,200 yen including tax)
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

About J:COM MOBILE A Plan ST/SU

contract cancellation fee
pear

contract period binding
pear

WEB application only
No initial cost

In combination with other services
Save on your smartphone monthly fees

60歳以上のお客さまはさらにおトク

J:COM MOBILE payment example (BASIO active2)

J:COM MOBILE Set Discount *1 Apply
Smartphone 10GB (Date Mori Applicable) *2 (For those who have not completed the above) 6 months

​1,000 yen per month

(1,100 yen including tax)

7th month onwards: 2,480 yen (2,728 yen including tax)

Basic monthly fee

[Voice call + data communication]
6 months

​0 yen per month

(From the 7th month onwards, 1,628 yen including tax)

Terminal price

[For 48 installment payments]

​1,000 yen per month

(1,100 yen including tax)

\For customers aged 60 or over/

Enkaku support

Unlimited calls

Nuisance calls and messages
block

Get 3 options free for 3 months!

シニア60割
J:COM MOBILE Application
iconSmartphone savings calculator

Easy online procedures

Step.1Applyfor mobile

You can complete your application online.
Please select the device, SIM, and rate plan you would like to purchase.

J:COM MOBILE Application

Click here for the application flow

--↓-- --↓--
Step 2:Receive your device

We will deliver to the address you provided.

--↓-- --↓--
Step 3:Initial settings

Once you have completed the initial setup, you can start using it!

See more about the sign up process

Contact us by phone
(Free call)0120-919-988 9:00-18:00 [Open all year round]

Customer feedback

  • 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

  • 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

  • Cheap and connected
    A safe smartphone

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

    20s/female
J:COM MOBILE Application
iconSmartphone savings calculator

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

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.

Does J:COM MOBILE have an "Unlimited calls" plan?

We offer an optional flat-rate call service, “Unlimited calls”.

イメージ

With this service, domestic calls of up to 5 minutes or 60 minutes are free of charge as many times as you like.

Click here for details on "Unlimited calls"

[About the amount including tax]

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