Pay-by-phone transactions let you buy digital goods by charging purchases...

https://judahsuniqueop-eds.lumenforgex.com/posts/fingerprint-payment-vs-saved-card-which-do-people-trust-more

Pay-by-phone transactions let you buy digital goods by charging purchases directly to your monthly phone bill or using prepaid credit. It’s a simple way to pay without entering card details, making checkout faster and easier on mobile devices