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Information on switching to 5G

5G switching flow

We will guide customers who are currently subscribed to 5G switching.
To use 5G, it is necessary to confirm "5G contract / 5G compatible terminal / 5G communication area".

Step.1 Check the current plan
Step.2 Check the 5G communication service area
Step.3 Check if the device supports 5G

Step 1

Check your current plan

①Please check on your My Page or MY J:COM app to see if the plan you are currently subscribed to is "J:COM MOBILE A Plan (voice + data)".

Check from My Page

Click here for my page

Check from app

②If your current plan is not "A Plan ST", please change the plan below.

Click here to change plan

Step.2

Check 5G communication service area

You can check if your area is a 5G communication service area from the au site below.

Service area map
(to au site)

Step.3

Check if your device supports 5G

In order to use 5G communication, it is necessary to have a 5G compatible terminal.
Please choose either.

Those with a SIM-only contract
Those who have a contract with a terminal and SIM together

Please check if your smartphone supports 5G on each manufacturer's website.
You can switch to 5G from the web.

Apply from the web

Log in with J:COM Personal ID → Select "Smartphone" from the service menu → Click the 5G service application button to complete the procedure.

J:COM MOBILE also sells 5G compatible terminals.

Click here to apply for model change

Model change

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.
Will there be any fees when changing to 5G service?: No fees will be charged for changing to 5G service.
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.
What should I do if I want to change to 5G service?: You can switch to 5G from My Page.
Log in with J:COM Personal ID → Select "Smartphone" from the service menu → Click the 5G service application button to complete the procedure.
How soon will I be able to use the 5G service after applying?: If you apply online, the switch will be performed sequentially from 9:00 a.m. two days after your application.