Carrier billing lets you buy apps, games, or services and charge the cost...

https://kathryn-hunt6.raindrop.page/bookmarks-74858895

Carrier billing lets you buy apps, games, or services and charge the cost directly to your phone bill. If you have a monthly plan, the purchase appears on your next bill. For prepaid users, the amount is deducted from your available pay-as-you-go credit