Carrier billing lets you pay for apps, games, or subscriptions by charging the...

https://felixyxmg408.yousher.com/can-i-use-carrier-billing-for-parking-and-transit-in-one-month

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