他サービスとセットで スマホ10GB 6カ月0円 J:COM MOBILE

7月1日（火）15時～WEB受付開始！

coming soon

J:COM MOBILE
Chosen by many customers

No.1 in low-cost smartphone market share growth rate / Low-cost SIM Awards Grand Prize in the communication speed (quality) category

  • 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 carrier" among seven low-cost smartphone companies in February and September 2024.
    Survey period: September 13th to September 24th, 2024 (n = 3,403).
  • Communication Speed (Quality) Category Best Award

Get 10GB of smartphone data with other services now for free for 6 months

Two​ ​great points

Monthly fees will be cheaper

In combination with the applicable service
Great monthly rates

5→10GB Monthly fee: 1,628 yen (tax included) 0 yen for 6 months

Learn more about J:COM MOBILE Set Discount
Increased monthly data volume!

Increase your data when combined with eligible services
And it's OK to carry it over *1

For example, if it's 5GB...

For example, if you have 5GB, you can go from 5GB to 10GB with the same smartphone fee!

Learn more about Date Mori
  • The expiration date for using the data traffic that has been carried over is until the end of the following month.
  • Separately compatible smartphones, universal service charges, telephone relay service fees, call charges, SMS communication charges, etc. are required. When subscribed to "J:COM MOBILE A Plan ST/SU (Voice + Data) [5GB]" and "Date Mori" and "J:COM MOBILE Set Discount" are applied at the same time. From the 7th month onwards, 1,628 yen (tax included) / month.

moreover
Set discount is
Great savings for families too!

The family members living together

up​ ​to 5 lines! *Discount for

Family illustration

This applies to people living in the same household as subscribers to non-mobile services.

Pricing details

Data capacity
As a set with J:COM services
"Date Mori" applied *1
5 GB
10 GB
10 GB
20 GB
20 GB
30 GB
Any unused data will be automatically carried over to the next month.
monthly fee
Set discount applied for 6 months discount *2
0yen
550yen(tax included)
1,100yen(tax included)
This price will remain the same from the 7th month onwards!
1,628yen(tax included)
2,178yen(tax included)
2,728yen(tax included)
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
  • Separate universal service fees, telephone relay service fees, and call and SMS communication fees are required.
  • A contract administration fee of 3,000 yen (3,300 yen including tax) is required (excluding A Plan SU). However, if you sign up for other J:COM services at the same time, the contract administration fee for J:COM MOBILE may be waived.

J:COMモバイルの特長

POINT.1

Smartphone and other services available
Always more data for the same price
Up to 5 lines

Date Mori

For example, if you have a 5GB contract, your price will increase to 10GB forever!

About Date Mori

POINT.2

It's an au line, so it's safe and comfortable!
Because it supports au 4G LTE

In the nationwide area
Connected and comfortable!*1

Best communication speed (quality) category

Best communication speed (quality) category

POINT.3

The remaining data capacity

No waste, just carry it over!! *2

With data carryover
Be smart and save money!

Current month: Monthly data capacity 5GB (used 3GB, remaining 2GB) → Next month: Usable data capacity 7GB

POINT.4

If you exceed your data usage
Even with speed limits...

Fast speeds of up to 1Mbps!! *3

data
No need to worry about overused months!

You can enjoy videos, music, and SNS crisply!

With J:COM MOBILE you can rest assured
Let's get started!

No cancellation fee

No contract period restrictions

Web application only
No initial cost
J:COMモバイルを詳しく見る

Answer the quiz and you'll be entered into a draw for 100 winners!​
Get a 500 yen QUO Pay Card!

Homework from Mr. Yoshitaka

Applicable condition

overview

During the campaign period, eligible customers who switch their line via MNP or from the D Plan and apply for a designated plan will receive a discount on their monthly basic fee.

Designated plan

  • J:COM MOBILE A Plan ST (SIM Card /device set) *Voice + Data [5GB or more]
  • J:COM MOBILE A Plan SU (eSIM) *Voice + Data [5GB or more]

Target data capacity

  • 5GB (10GB with Date Mori)
  • 10GB (20GB with Date Mori)
  • 20GB (30GB with Date Mori)

discount amount

1,628 yen (tax included) x 6 months = 9,768 yen (tax included)
period

July 1, 2025 (Tuesday) - October 31, 2025 (Friday)
Target audience

Customers who are already subscribed to eligible J:COM services or are new subscribers, who apply for the designated plan during the applicable period, and whose line is activated by Wednesday, December 31, 2025 (new subscribers to eligible J:COM services must apply for the designated plan at the same time).

  • This offer does not apply to lines that have been canceled from J:COM MOBILE within the past six months.

Applicable J:COM services

TV, Internet, Phone, Electricity

  • Excluding WiMAX
Apply
  • A discount on the monthly basic fee will be applied from the month following the activation of the specified plan.
  • This offer can be applied once per line, with a maximum of 5 lines per household for A Plan ST (SIM Card /device set), and up to 5 lines per subscriber name for A Plan SU (eSIM).
please note
  • After the discount period ends, the regular rate will automatically continue.
  • If you cancel or move to a new J:COM service during the discount period, or if you change your contract to a plan other than the specified plan, the discount will end.
  • Cannot be combined with some discounts.
  • Discounts are subject to change without notice.
[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 and does not guarantee a certain 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

[About the overall service]

  • As of the end of June 2013 (with some exceptions).
  • Products, discounts/gift contents and periods may change without notice.
  • Please note that some services may not be available at certain addresses or buildings, and the conditions and periods for discounts/gifts may differ.
  • Only some services can be installed by the customer.
  • Company names, product names, and service names are registered trademarks or trademarks of each company. Including some pending applications.

[J:COM MOBILE A Plan ST/SU (voice + data)]

  • Contracts are limited to a maximum of 5 lines per household for [A Plan ST], and a maximum of 5 lines per subscriber name for [A Plan SU].
  • If the total amount of data used in a given month exceeds the monthly data allowance (including additional data and carried over data), the maximum sending and receiving speed until the end of that month will be [1GB/5GB] 200kbps/[10GB/20GB] 1Mbps.
  • Available in au's 4G LTE area (some areas support 5G). 3G communication is not available. Depending on the usage environment, communication may not be possible or the communication speed may decrease.

[A Plan ST]

  • SIM unlock may be required.
  • If you are not able to receive the product (terminal, etc.) within 7 days of the scheduled arrival date due to absence or other reasons, usage fees may be charged from the 8th day including the scheduled arrival date.

[MNP line switching]

  • Some phone numbers may not be available.
  • At the time of application, you will need an MNP reservation number with a validity period of 10 days or more.
  • There may be cases where the email address you used before switching cannot be used, or where data transfer is required to continue using the apps you are currently using.
Close

[About the amount including tax]

  • The listed amounts include tax unless otherwise specified.
  • Consumption tax differences may occur due to changes in the consumption tax rounding method under the invoice system.