Pay-by-phone lets you buy online and charge the cost directly to your phone...

https://www.bookmarking-planet.win/pay-by-phone-transactions-let-you-buy-digital-goods-quickly-using-your-mobile

Pay-by-phone lets you buy online and charge the cost directly to your phone bill or prepaid balance. It’s a simple way to pay without needing a credit card, making purchases quick and easy, especially on mobile devices