Carrier billing lets you pay for apps, games, or digital content by adding the...

https://www.social-bookmarkings.win/carrier-billing-lets-you-buy-apps-games-or-digital-content-and-charge-the-1

Carrier billing lets you pay for apps, games, or digital content by adding the cost to your phone bill. If you have a monthly plan, the charges appear on your regular statement. For pay-as-you-go users, the amount is taken from your prepaid balance