Credit Card for Paying for my Phone

My phone provider seems to need a credit card on file for me to be able to pay for my phone bill.

Currently, I am using a credit card for this which is linked to a bank account outside of Japan. For various reason, I plan to close this account/card.

What is a simple way for me to solve this issue?

Should I apply for a credit card in Japan? For my usual expenses, I can get away with Bank Transfer, Paypay, (and a prepaid card like Kyash for paying for certain things online).

Which credit card would be the simplest for me to apply for? Not sure if it matters, but I have lived here for a little over an year, and my visa is valid for a few more years into the future.

Personally, I do not really intend to use a credit card for anything other than this.

by agnishom