Pay-by-phone lets you buy apps, games, or digital content and charge the cost...

https://www.save-bookmarks.win/pay-by-phone-transactions-let-you-buy-digital-goods-quickly-using-your-mobile-1

Pay-by-phone lets you buy apps, games, or digital content and charge the cost directly to your phone bill or prepaid credit. It’s a simple way to pay without needing a card or bank account