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

https://legacystance.com/frictionless-payments-the-rise-of-pay-by-phone-transactions-in-digital-commerce/

Pay-by-phone transactions let you buy digital goods quickly by charging purchases directly to your phone bill or using prepaid credit. It’s a simple way to pay without entering card details, making checkout faster and keeping your payment info secure