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

https://wiki-fusion.win/index.php/What_Should_I_Look_for_on_My_Bill_to_Spot_Carrier_Billing%3F

Carrier billing lets you pay for apps, games, or subscriptions by adding the cost to your monthly phone bill or subtracting it from your pay-as-you-go credit