Thank you for choosing our service.

This is the "SIM / Mobile WiFi Extension Form." To extend your subscription, please review the following notes, fill in the required information, and click the "Confirm" button.

■ Important Notes

• Changes Not Permitted Please note that communication plans and SIM types (e.g., switching from eSIM to a physical SIM card) cannot be changed through this extension form.

• Extension Deadline The application deadline is the last day of the month prior to your contract expiration month.

• Automatic Termination If the extension process is not completed by the deadline, your contract will automatically terminate on the expiration date, and you will no longer be able to use the service.

Required fields are marked with ※.
※は必須項目です。

Customer ID (if you do not know it, leave it blank)

Name and surname *

University, School, or Organization Name *

Address ※Please, do NOT forget the building name. *

Room number *

Phone number

Email address *

Desired new expiration date *

Please select 2026/4/30 2026/5/31 2026/6/30 2026/7/31 2026/8/31 2026/9/30 2026/10/31 2026/11/30 2026/12/31 2027/1/31 2027/2/28 2027/3/31 2027/4/30 2027/5/31 2027/6/30 2027/7/31 2027/8/31 2027/9/30 2027/10/31 2027/11/30 2027/12/31 2028/1/31 2028/2/28 2028/3/31 2028/4/30 2028/5/31 2028/6/30 2028/7/31 2028/8/31 2028/9/30 2028/10/31 2028/11/30 2028/12/31 2029/1/31 2029/2/28 2029/3/31 2029/4/30

Please choose a plan to continue *

Sim service

Mobile router

both

Change the number of installments? If yes, please select your desired option.

One-time payment

Monthly payment

Remarks

I accept the terms of contract and agree with Sun-Net personal information protection policy. If you agree with our privacy policy, please check the button and click on “Send application”