GTN MOBILE Application for changing contract contents

Plan Change

To reissue or change size of your SIM card , please send an email to​ ​info@gtn-mobile.com ​ ​with your name and phone number.
Please also mention your current plan and the new plan you want to change to. You can also contact our Support Center (​ ​03-5155-4673)for further support.
Plan Change can also be done from MY PAGE.

Cannot keep your current number
Depending on what plan you want to change to, you may need to cancel your current number and make a new one.

Keep your current number
  • PREMIUM 2GB
  • PREMIUM 6GB
  • PREMIUM 14GB

Cannot keep your current number
Depending on what plan you want to change to, you may need to cancel your current number and make a new one.

  • EXPRESS 3GB
  • EXPRESS 5GB
  • EXPRESS 7GB
Keep your current number

Change your home address/email

To reissue or change size of your SIM card , please send an email to​ ​info@gtn-mobile.com ​ ​with your name and phone number.

  • If you moved to a different place, please also send us new copies of your residence card with your new address registered.
  • If you want to change your Email, please write us your current email and the new Email.

Email Change can also be done from MY PAGE.

Change your payment method

To reissue or change size of your SIM card , please send an email to​ ​info@gtn-mobile.com ​ ​with your name and phone number.
Please also mention your current payment method and the new payment method. You can also contact our Support Center (03-5155-4673)for further support.

Cancellation

To reissue or change size of your SIM card , please send an email to​ ​info@gtn-mobile.com ​ ​with your name and phone number.
Please also mention when you want to cancel the contract and the reason for cancellation. After confirmation, GTN will adjust the last payment accordingly.
You can also call us at(03-5155-4673)for further assistance. Cancellation request can be made from MY PAGE too.

Reissuance of SIM card/Changing size of SIM card

To reissue or change size of your SIM card , please send an email to​ ​info@gtn-mobile.com ​ ​with your name and phone number.
Please also clarify if you want to reissue or change the size of your SIM card. Furthermore, please also let us know your current size SIM and the new size SIM.
You can also call us at(03-5155-4673)for further assistance. Request can also be made from MY PAGE.