Pay-by-phone lets you buy things online and charge the cost directly to your...

https://fun-wiki.win/index.php/Carrier_Billing_Not_Working%3F_What_Should_I_Check_First%3F

Pay-by-phone lets you buy things online and charge the cost directly to your monthly phone bill or prepaid credit. It’s a simple way to pay without entering card details, making checkout faster and easier on your phone