Pay-by-phone transactions let you buy digital goods or services quickly by...

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

Pay-by-phone transactions let you buy digital goods or services quickly by charging the amount directly to your monthly phone bill or prepaid credit. It’s a simple way to pay without entering card details, especially handy on mobile devices