Check your contract information and payment details,Change of plan,
Option application procedures, etc.Yes, it can be done.
If you haven't installed the app yet
You can check not only your usage charges, but also the breakdown and past billing information.
You can see at a glance the remaining data volume used for communication and the carryover status.
You can change your current rate plan and apply for or cancel optional services.
You can change your email address and set up spam protection.
You can change the subscriber's address and contact phone number. You can also change the billing address.
Please download and use the application from the link below.
For iPhone and iPad users
Smartphone and tablet users
For policyholderscampaign
We will provide information on advantageous campaigns and recommended information to customers who use Y!mobile.
SIM unlock
You can unlock the SIM lock on a phone purchased from a second-hand dealer or given to you by a friend here.
Company smartphones tooY!mobilein
With two or more lines
Forevermonthly870yen (excluding tax)discount!