Carrier billing lets you buy apps, games, or digital content and charge the...

https://www.rankbookmarkings.win/carrier-billing-lets-you-buy-digital-goods-or-services-and-charge-them-directly

Carrier billing lets you buy apps, games, or digital content and charge the cost to your monthly phone bill or take it from your pay-as-you-go credit. It’s a simple way to pay without using a credit card or entering payment details each time