We will guide you through changes to your contract address, billing address, and contact email address due to moving, etc.
Please also check here for procedures when the contract name is passed on to a family member when a contract holder passes away, or when the contract name is passed on to the surviving corporation when a company merges or splits up.
If the contract holder's name (company name) has changed, please check here for the name change/rename procedure.
It is possible to suspend or resume mobile phone service due to loss or theft.
After checking the details of your contract, you can change to your preferred rate plan.
After checking the details of your contract, you can change to your preferred optional services.
If your data usage exceeds a certain amount based on your billing plan, your data speed will be slowed down until the end of the billing month. You can restore normal speeds by purchasing additional data.
We will guide you through the procedure for unlocking the SIM on Y!mobile product.