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

https://rileysexcellentnews.readspirex.com/posts/is-pay-by-phone-billing-the-same-as-a-mobile-wallet

Carrier billing lets you pay for apps, games, or digital content by adding the cost directly to your phone bill. If you have a monthly plan, the charge appears on your next statement