Pay-by-phone lets you buy apps, games, or digital content and charge the cost...

https://milosimpressivejournals.quillnesty.com/posts/what-are-qr-code-payments-and-when-do-they-help

Pay-by-phone lets you buy apps, games, or digital content and charge the cost directly to your phone bill or prepaid credit. It’s a simple way to pay without needing a card or bank account