Pay-by-phone lets you buy digital goods and services with just your mobile...
https://hectorzfzj813.image-perth.org/is-carrier-billing-the-same-as-pay-by-phone-understanding-mobile-network-provider-billing
Pay-by-phone lets you buy digital goods and services with just your mobile device. Charges go straight to your monthly phone bill or use prepaid credit if you have it. It’s a simple way to pay without needing a credit card or bank details during checkout.