Pay-by-phone lets you buy digital goods and services easily by charging...

https://lukasiwad089.theburnward.com/carrier-billing-vs-google-pay-what-is-the-difference

Pay-by-phone lets you buy digital goods and services easily by charging purchases directly to your monthly phone bill or using prepaid credit. It’s a simple way to pay without needing a credit card, making mobile shopping quick and convenient for everyone