Carrier billing lets you buy apps, games, or subscriptions and have the cost...

https://www.pop-bookmarks.win/carrier-billing-lets-you-buy-apps-games-or-digital-content-and-charge-the

Carrier billing lets you buy apps, games, or subscriptions and have the cost added to your monthly phone bill or taken from your prepaid credit. It’s a simple way to pay without entering card details, making small purchases easier on your phone.