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

Discount for up​ ​to 5 lines! *

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
0​ ​yen
550​ ​yen​ ​(tax included)
1,100​ ​yen​ ​(tax included)
This price will remain the same from the 7th month onwards!
1,628​ ​yen​ ​(tax included)
2,178​ ​yen​ ​(tax included)
2,728​ ​yen​ ​(tax included)
Voice calls (domestic calls)

Unlimited calls (5 minutes/call)

500​ ​yen
(550 yen including tax)

Unlimited calls (60 minutes/call)

1,500​ ​yen
(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

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.

[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.