Pay-by-phone transactions let you charge purchases directly to your mobile...

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

Pay-by-phone transactions let you charge purchases directly to your mobile phone. Whether you have a monthly plan or prepaid credit, you can easily pay for apps, games, or digital content without needing a credit card