For new members
Easy check in 30 seconds!
Won two awards for communication quality satisfaction
With J:COM MOBILE
Comfortable communication quality!
- Source: MMD Research Institute's "September 2025 MVNO Market Share and Satisfaction Survey." A survey of main users (150 people each) of seven low-cost smartphone companies, comparing satisfaction scores for communication quality. Survey period: September 12th to September 21st, 2025.
Two great points
Set discount (J:COM MOBILE)
Great value monthly fee
In the case of 10GB of Date Mori
Increase your data with Date Mori!
And you can carry it over. ※1
For example, if it's 5GB...
*1 The expiration date for carried-over data usage is the end of the following month.
Set discount (J:COM MOBILE)
About the applicable services
Television, internet, Landline, electricity,
Any of the services and
Combine your smartphone
If you use it, a set discount will be applied,
Smartphone charges will be discounted.
- A separate subscription to applicable J:COM services is required (Internet 4,730 yen (tax included) (J:COM Oita 4,400 yen (tax included))/month and up). Other charges include compatible smartphone/broadband universal service fee, telephone universal service fee, telephone relay service fee, call charges, and SMS communication fees. Automatically renews at 1,958 yen (tax included)/month from the 7th month. When subscribing to "J:COM MOBILE A Plan ST/SU (voice + data) [5GB]" and applying "Set Discount" and "Date Mori" at the same time.
moreover
Set discount is
Great savings for families too!
The family members living together
Discount for up to 5 lines! *
This applies to people living in the same household as subscribers to non-mobile services.
A new way of life with J:COM.
For new members
Easy check in 30 seconds!
J:COM MOBILE Features
Smartphone and other service contracts
Increased data at the same price
Up to 5 lines
Date Mori
Safe and comfortable thanks to the au network!
Compatible with 5G/4G LTE areas
In the nationwide area
Comfortable connection*1
The remaining data capacity
No waste, just carry it over!! *2
Be smart and save money!
If you exceed your data usage
Even with speed limits...
Fast speeds of up to 1Mbps!! *3
No need to worry about overused months!
Smartphones and tablets
Repair and replacement costs
Up to 150,000 yen compensation *4
Increased insurance payouts!
With J:COM MOBILE you can rest assured
Let's get started!
With comprehensive support
Switching from a feature phone is easy
Security and warranty services
Safety and security
For new members
Easy check in 30 seconds!
SIM/Device
Low-cost SIM
Smartphone as is
Easy transfer
Check if it can be used with your current smartphone
See compatible devicesDevice Introduction
J:COM provides SIM and devices
You can purchase them as a set!
- iPhone
- android
Other
Recommended Services
Features and Prices
J:COM NETJ:COM NET
Enjoy video viewing and online meetings comfortably!
of
Large capacity communication!!
With J:COM Hikari,
Up to 10GB With high-capacity communication
Enjoy videos and meetings comfortably and stress-free!
The more you use it, the more comfortable it becomes!
Wi-Fi 7 compatible
Next generation AI Wi-Fi
Ideal for connecting multiple devices,
Automatically connect to the optimal Wi-Fi for each device!
peace of mind
Manage your home 's communication environment with the app
Always available
Easy operation 24 hours a day
You can always diagnose
Safe even at night.
- Diagnosis is limited to J:COM services. It is not available for "J:COM NET Hikari on au Hikari"/" J:COM NET Hikari (N)". For details, please contact J:COM.
Get even more value when combined with the internet
- Apartment complex
- detached house
Choose your smartphone data capacity
-
5GB course
Increased to 10GB
-
10GB course
Increased to 20GB
-
20GB course
Increased to 30GB
-
50GB course
Increased to 60GB
|
J:COM MOBILE
10GB 20GB 30GB 60GB J:COM NET
J:COM Hikari 1G |
|
Discount applied for 3 months
Monthly fee: 5501,1001,6502,750 yen (tax included) *1 Monthly fee: 0 yen (tax included) *2 |
| Monthly fee: 5501,1001,6502,750 yen (tax included) After the discount ends (7th month onwards) 7,2167,7668,3169,086 yen (tax included) |
|
Discount applied from 4th to 6th month
Monthly fee: 5501,1001,6502,750 yen (tax included) *1 Monthly fee: 5,258 yen (tax included) |
| Monthly fee: 5,8086,3586,9088,008 yen (tax included) After the discount ends (7th month onwards) 7,2167,7668,3169,086 yen (tax included) |
Monthly fees will be revised on June 1, 2026. Click here for fees up to May 31, 2026.
Starting in June 2026, the monthly fees for J:COM MOBILE A Plan ST/SU will be revised. For more information, click here.
- If you subscribe to "J:COM MOBILE A Plan ST/SU (Voice + Data)" and apply "Date Mori" and "Set Discount (J:COM MOBILE)" at the same time.
- Monthly fee when applying WEB Gentei Start Wari to J:COM NET Hikari (N) 1 Gigabit course in an apartment building.
- Click here for the applicable conditions for Date Mori
- Click here for the conditions for applying for the set discount (J:COM MOBILE)
- WEB Gentei Start Wari application conditions are here
- Cashback conditions apply here
- WEB Gentei Start Wari is calculated from the month following the completion of the installation work. The installation work completion month will be prorated.
- The set discount (J:COM MOBILE) applies to the monthly basic fee from the month following the activation of the designated plan. In the activation month, the regular monthly fee (prorated after activation) will be charged without any discount.
- Separate charges apply, including broadband universal service fees (in the case of J:COM NET, this may not apply depending on the contract), telephone universal service fees, telephone relay service fees, call charges, and SMS communication fees.
If you are under 26 years old
NET is even more affordable!
Choose your smartphone data capacity
-
5GB course
Increased to 10GB
-
10GB course
Increased to 20GB
-
20GB course
Increased to 30GB
-
50GB course
Increased to 60GB
|
J:COM MOBILE
10GB 20GB 30GB 60GB J:COM NET
Ultra-fast 10G internet |
|
Discount applied for 6 months
Monthly fee: 5501,1001,6502,750 yen (tax included) *1 Effectively 0 yen per month (tax included) *2 |
| Effective monthly fee: 5501,1001,6502,750 yen (tax included) After the discount ends (7th month onwards) 8,1188,6689,2189,988 yen (tax included) |
Monthly fees will be revised on June 1, 2026. Click here for fees up to May 31, 2026.
Starting in June 2026, the monthly fees for J:COM MOBILE A Plan ST/SU will be revised. For more information, click here.
- If you subscribe to "J:COM MOBILE A Plan ST/SU (Voice + Data)" and apply "Date Mori" and "Set Discount (J:COM MOBILE)" at the same time.
- J:COM NET 10G 6,710 yen (tax included) -WEB Gentei Start Wari 3,377 yen (tax included) - effective 3,333 yen (cash back 20,000 yen ÷ 6 months) = effective 0 yen (tax included)
- Click here for the applicable conditions for Date Mori
- Click here for the conditions for applying for the set discount (J:COM MOBILE)
- WEB Gentei Start Wari application conditions are here
- Cashback conditions apply here
- WEB Gentei Start Wari is calculated from the month following the completion of the installation work. The installation work completion month will be prorated.
- The set discount (J:COM MOBILE) applies to the monthly basic fee from the month following the activation of the designated plan. In the activation month, the regular monthly fee (prorated after activation) will be charged without any discount.
- Separate charges apply, including broadband universal service fees (in the case of J:COM NET, this may not apply depending on the contract), telephone universal service fees, telephone relay service fees, call charges, and SMS communication fees.
Television J:COM TV
Very popular!!
J:COM TV Shin Standard
Selected specialty channels and
TELASA, Paramount+ was added.
Enjoy video streaming!
★ Some works are available for a separate fee.
Watch your favorite videos when and where you want!
Compatible with multiple devices!!
on your TV, smartphone, or tablet
You can watch your favorite videos anywhere, anytime.
Find what you want to see!!
Rich channel lineup!!
Western movies, Japanese movies, sports, variety shows, etc.
You're sure to find the program you want to watch! !
Get even more value when you buy it as a set with a TV
Choose your smartphone data capacity
-
5GB course
Increased to 10GB
-
10GB course
Increased to 20GB
-
20GB course
Increased to 30GB
-
50GB course
Increased to 60GB
|
J:COM MOBILE
10GB 20GB 30GB 60GB J:COM TV
Shin Standard |
|
Discount applied for 3 months
Monthly fee: 5501,1001,6502,750 yen (tax included) *1 500 yen per month (tax included) *2 |
| Monthly fee: 1,0501,6002,1503,250 yen (tax included) After the discount ends (7th month onwards) 6,9087,4588,0088,778 yen (tax included) |
|
Discount applied from 4th to 6th month
Monthly fee: 5501,1001,6502,750 yen (tax included) *1 4,950 yen per month (tax included) |
| Monthly fee: 5,5006,0506,6007,700 yen (tax included) After the discount ends (7th month onwards) 6,9087,4588,0088,778 yen (tax included) |
Monthly fees will be revised on June 1, 2026. Click here for fees up to May 31, 2026.
Starting in June 2026, the monthly fees for J:COM MOBILE A Plan ST/SU will be revised. For more information, click here.
- If you subscribe to "J:COM MOBILE A Plan ST/SU (Voice + Data)" and apply "Date Mori" and "Set Discount (J:COM MOBILE)" at the same time. From the 7th month onwards: 1,958 yen (tax included)/month
- WEB Gentei Start Wari applies. Requires a two-year contract with automatic renewal. Early termination fees apply.
- Click here for the applicable conditions for Date Mori
- Click here for the conditions for applying for the set discount (J:COM MOBILE)
- WEB Gentei Start Wari application conditions are here
- WEB Gentei Start Wari is calculated from the month following the completion of the installation work. The installation work completion month will be prorated.
- The set discount (J:COM MOBILE) applies to the monthly basic fee from the month following the activation of the designated plan. In the activation month, the regular monthly fee (prorated after activation) will be charged without any discount.
- Separate charges apply, including broadband universal service fees (in the case of J:COM NET, this may not apply depending on the contract), telephone universal service fees, telephone relay service fees, call charges, and SMS communication fees.
ElectricityJ J:COM Electricity
Same quality
Same stable supply of electricity as before!
Since we will be using the same power distribution facilities as before,
The quality and safety of electricity remains unchanged!
No switching work or fees
Switching is easy and safe!
- No construction work required when switching *6
- No joining/cancellation fees
- No contract period restrictions
Joining fees, cancellation fees, and contract period restrictions
Because there isn't peace of mind is!
Easily manage your household finances
All payments to J:COM in one go!
J:COM service charges and
Because you can consolidate your electricity bills
Managing your household finances is easy.
For new members
Easy check in 30 seconds!
Application flow
Choose your desired service
Set discount (J:COM MOBILE)
Please sign up for the applicable J:COM service first.
You will need to provide it.
You are not currently using the applicable service
Customers Here
1 Preparation for transfer
If you want to continue using your current smartphone
Please check if the device can be used from the operation check terminal checker.
Using eSIM
Smartphone
Wi-Fi etc.
network
Other terminals
- Since eSIM requires the use of eKYC, you can apply only from your smartphone.
- Other devices are used to display the QR code for downloading the profile.
2 Smartphone application
You can complete your application via the web.
Please select the device, SIM, rate plan and options you would like to purchase.
Smartphone + SIM Card
Those who are applying for SIM Card only
For those applying for eSIM
Please apply from your smartphone
- Minors cannot apply online. Please contact us or apply in the name of a parent or guardian.
- If there are any issues with the information you have submitted online, you will be required to confirm the details and follow the official application procedures at a later date.
-
Image data of identity verification documents
Please prepare J:COM contract identity document that shows your current address.
- When applying from a smartphone, you can choose eKYC (online identity verification) or image upload.
- Since eSIM requires the use of eKYC, you can apply only from your smartphone.
- You cannot apply for an eSIM if your identity verification documents and your current address are different. Apply for SIM Card. Click here for details
-
MNP reservation number
- Not required if you complete the MNP one-stop procedure.
- The MNP reservation number must have at least 10 days remaining before expiry.
-
J:COM Personal ID
3. Receipt and Initial Settings
When you receive the product, please check the enclosed documents and
Please complete the activation procedure.
-
Smartphone + SIM Card
SIM Card only -
Built-in smartphone
Using SIM (eSIM)
1 Application
Please apply using the form below.
J:COM representative will call you back.
1 Application
1. Set discount applicable services
Application
Application
Services eligible for set discounts (Internet, TV, Landline, electricity)
Please apply.
Payment information (credit card)
2. Apply for eSIM
If you plan to continue using your current smartphone,
Please prepare to transfer first.
Please check if the device can be used from the operation check terminal checker.
You can complete your application via the web.
Please select the device, SIM, rate plan and options you would like to purchase.
Please apply from your smartphone
- Minors cannot apply online. Please contact us or apply in the name of a parent or guardian.
- If there are any issues with the information you have submitted online, you will be required to confirm the details and follow the official application procedures at a later date.
- Since eSIM requires the use of eKYC, you can apply only from your smartphone.
- Other devices are used to display the QR code for downloading the profile.
-
Image data of identity verification documents
-
MNP reservation number
- Not required if you complete the MNP one-stop procedure.
- The MNP reservation number must have at least 10 days remaining before expiry.
-
J:COM Personal ID
Using eSIM
Smartphone
Wi-Fi etc.
network
Other terminals
2. Start using the service
1. Set discount applicable services
Start using
Start using
TV, Internet, Landline
You can choose to install and configure the system yourself or have a technician install it for you.
- For some properties and services, only "installation by workers" is possible.
- For those who live in detached houses, click here
- For those who live in apartment complexes, click here
electricity
Once the contract is completed, you can start using the service. Indoor construction work *5- No attendance is required.
- It may take several weeks to switch over.
2. Start using eSIM
When you receive the product, please check the enclosed documents and
Please complete the activation procedure.
Switched to J:COM
Customer feedback
They were very helpful, from initial setup to data transfer.
thank you very much.
If you switch from a major carrier to J:COM Mobile,
I saved about 10,000 yen.
It's very reasonable and the line speed is one of the faster among low-cost SIMs.
I feel that there are many benefits to switching over.
For new members
Easy check in 30 seconds!
Answering "Homework from Mr. Yoshitaka"
QUO Card Pay gift
Applicable condition
| overview |
|---|
|
Eligible customers who apply for the "J: J:COM MOBILE A Plan ST/SU *Voice + Data [5GB or more]" (hereinafter referred to as the "Designated Plan") as a new customer, switching to an MNP line, or transferring from the "J:COM MOBILE D/A Plan" will receive a discount on their monthly basic fee. Target data capacity 5GB / 10GB / 20GB / 50GB discount amount
The 50GB plan will continue to be discounted at 1,078 yen (tax included) per month from June 1st onwards. |
| Target audience |
|
Applicants must meet all of the following conditions:
|
| Apply |
|
| please note |
|
- Both voice calls and data communications can be used in au's 4G LTE area (some areas are 5G compatible). 3G communications cannot be used.
Even within the service area, communication may not be possible or communication speeds may be slow.
In addition, it may not be possible to use the device even if you are on a high floor of a high-rise building or apartment building with a good view.
Please check the au website for the latest area information. Communication speeds are best-effort services and are not guaranteed to be consistent. Speeds may vary depending on your usage environment. - The remaining amount is valid until the end of the following month.
- For 10GB/20GB/50GB (20GB/30GB/60GB after increase) plans
- For a 3-device plan. For a 2-device plan, coverage is up to 100,000 yen.
-
Tokyo, Tohoku, Kansai, Chugoku, and Kyushu Electric Power Area
Based on an agency agreement between our company and Sumitomo Corporation (hereinafter referred to as "Sumitomo Corporation"), a retail electricity supplier, electricity supplied by Sumitomo Corporation is supplied as J:COM Denki.
Hokkaido Electric Power Area
Based on an agency contract between our company and Hokkaido Electric Power Co., Inc. (hereinafter referred to as "Hokkaido Electric Power"), a retail electricity supplier, we supply electricity supplied by Hokkaido Electric Power as J:COM Denki. - It may be necessary to replace the outdoor meter (wattmeter) (free of charge).
[About the overall service]
- As of the end of January 2014 (some exceptions apply).
- 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 month exceeds the monthly data allowance (including additional and carried-over data), the maximum sending and receiving speed until the end of the month will be [1GB/5GB] 200kbps/[10GB/20GB/50GB] 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.
[J:COM NET Hikari]
- The speed of the service varies depending on the area and course. For more information about ONU's Wi-Fi standard, please visit the website.
[Next-generation AI Wi-Fi (High-performance Wi-Fi 7/High-performance Wi-Fi)]
- IEEE802.11a/b/g/n/ac/ax/be standard. For courses that do not support Wi-Fi 7, the standard is IEEE802.11a/b/g/n/ac (the "J:COM NET Hikari (N) 1G Course" is IEEE802.11a/b/g/n/ac/ax standard). To achieve the communication speeds required by the 10G technical standard, you must connect to the ONU using a compatible device/wired LAN. Cannot be used in conjunction with commercially available wireless repeaters. *This service may not be available in some apartment complexes. Please contact J:COM for details.
[J:COM NET Hikari 10G/1G Course on au Hikari]
- If the customer's device (one device) is Wi-Fi 7 compatible and has a 2x2 antenna and 6GHz, the maximum speed according to the technical standard when connected wirelessly is approximately 11.5Gbps.
[J:COM NET Hikari 10G/1G Course (J:COM Line)]
- If the customer's device (one device) is Wi-Fi 7 compatible and has a 2x2 antenna and 6GHz, the maximum speed according to the technical standard when connected wirelessly is approximately 11.5Gbps.
[J:COM NET Hikari (N) 1G Course]
- IEEE802.11a/b/g/n/ac/ax standard. To achieve 10G communication speeds, you must connect the ONU with a compatible device (10GBASE-T) or wired LAN (Category 6A, 6e, or higher). Cannot be used in conjunction with commercially available wireless repeaters.
TELASA
- This applies to works included in the TELASA unlimited viewing plan, excluding live broadcasts and some titles.
- Some delivery dates may vary.
- Bonus movie theater coupons and Ponta point redemption are not applicable.
- "Netflix"/" Disney Plus"/"DAZN" can be used on devices that support each service. For details on compatible devices, check the "Netflix" / "Disney Plus" / "DAZN" websites.
- "Disney Plus" is a service operated by Walt Disney Japan K.K. © 2025 Disney
- TELASA is a trademark or registered trademark of TELASA Corporation.
- “Paramount+” is a registered trademark of Paramount Pictures Corporation. © 2023 Paramount Global
[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.
![(OK) My number card [front]](/common_v2/include/tips/verification_data/img/fig3.png)
![(NG) My number card [back]](/common_v2/include/tips/verification_data/img/fig4.png)
If you use J:COM MOBILE, your total communication costs will be
What was attractive was that it would save about 5,000 yen per month.