Pay-by-phone lets you buy online using your mobile number. Charges go straight...

https://wiki-club.win/index.php/Saved_Payment_Credentials_vs_Typing_Card_Details_on_Mobile

Pay-by-phone lets you buy online using your mobile number. Charges go straight to your monthly phone bill or use up your prepaid balance. It’s a simple way to pay without needing cards or bank details, making checkout faster and easier on your phone.