*Please note
The discount will take effect from the following month, but if you apply after 9:00 p.m. at the end of the month, the discount may take effect from the month after that. Please be sure to check the effective date.
Log in to My Y!mobile and tap "Change Rate Plan."
(See How to Log In for instructions on how to log in.)
Select the rate plan you want to change.
Select a calling option.
Select how you would like to review your transaction details later.
Check the notes and tap [Confirm changes].
After confirming the changes, check "Agree" and tap "Apply."
*Please note
The discount will take effect today or the following month, but if you apply after 9:00 p.m. at the end of the month, it may take effect the following day or the month after that. Please be sure to check the effective date.
Log in to My Y!mobile and tap [Change Options].
(See How to Log In for instructions on how to log in.)
Tap [Change] for the optional service you want to change.
To complete the procedure, please prepare your SoftBank ID (Y!mobile mobile phone number or alphanumeric ID) and My Y!mobile login password.
If you are using this service for the first time, please prepare your Y!mobile mobile phone number and PIN (4 digits).