Same price even with 5G
New customers
Contact us by phone
(Free call)0120-989-970
9:00-18:00 [Open all year round]
monthly fee
The price remains the same even with 5G!
This price for everyone ♪
(1,078 yen including tax)
(1,628 yen including tax)
(550 yen including tax)
(2,178 yen including tax)
(1,100 yen including tax)
(2,728 yen including tax)
(1,650 yen including tax)
50GB
(3,828 yen including tax)
(2,750 yen including tax)
50GB
(1,078 yen including tax)
(1,628 yen including tax)
(2,178 yen including tax)
(2,728 yen including tax)
(3,828 yen including tax)
(550 yen including tax)
(1,100 yen including tax)
(1,650 yen including tax)
(2,750 yen including tax)
Starting in June 2026, the monthly fees for J:COM MOBILE A Plan ST/SU will be revised. For more information, click here.
| Data Carryover | Any unused data will be used the following month. Automatically carry over |
|---|
| Voice calls (Domestic calls) |
Unlimited calls (5 minutes/call)
500yen Unlimited calls (60 minutes/call)
1,500yen Domestic calls: 20 yen (22 yen including tax)/30 seconds |
|---|
- Separate charges apply for the broadband universal service fee, telephone universal service fee, telephone relay service fee, call charges, SMS communication charges, etc.
- The monthly fee will be the price after the set discount (J:COM MOBILE) is no longer applied.
- 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.
- With Date Mori, 1GB will be increased to 5GB, 5GB will be increased to 10GB, 10GB will be increased to 20GB, 20GB will be increased to 30GB, and 50GB will be increased to 60GB. See here for applicable conditions.
- Click here for the conditions for applying for the set discount (J:COM MOBILE)
J:COM MOBILE
Easy to switch!
\Monthly fee is cheaper/
Great value from the first line
Simple price plan
Same price for 5G!
Choose a price plan that suits you
Smartphone savings calculator
About 5G
5G makes everyday life more convenient than ever
With 5G, you can easily watch large videos!
With 5G, new frequency bands will become available for mobile communications, and it is said that in the future, communication speeds will be about 20 times faster than 4G LTE. Download latency is also greatly reduced.
- "Approximately 20 times" is the maximum value according to technical standards and differs from the actual usage speed.
5G area
You can check the areas where 5G is available.
Service area map (to au site)
★5G is available in some areas.
Application flow
Easy online application!
Even if you don't have to go to the shop and wait,
Complete the purchase process at home.
Sign Up
Pick up your device
Perform initial setup
New customers
Contact us by phone
(Free call)0120-989-970
9:00-18:00 [Open all year round]
FAQ
We introduce frequently asked questions from customers.
If you have any questions, please contact us by phone or chat.
- What is 5G?
-
For details, please check here.
- Can I still use the SIM?
-
Yes, if you are a J:COM MOBILE subscriber and change your service to 5G, you can use the same SIM Card to use the 5G service.
Limited to J:COM MOBILE A plan (voice + data) subscribers.
5G communication requires a 5G terminal.
