Carrier Billing, also known as mobile billing or direct carrier billing, is a payment method that enables users to make purchases and transactions by charging the associated costs to their mobile phone bill. It provides a convenient and seamless way to pay for digital goods, services, subscriptions, and in-app purchases.

In a carrier billing process, when a user opts to pay using carrier billing, the cost of the purchase is added to the user's mobile phone bill. The user's mobile carrier processes the payment and ensures that the appropriate amount is charged to the user's account.

This payment method is especially popular for mobile app purchases, content downloads, game credits, and other digital transactions, where users may not have or prefer not to use traditional payment cards. It eliminates the need for credit or debit card details and provides an accessible option for a wide range of users.

Carrier billing offers several advantages, including accessibility, ease of use, and wider reach, particularly in regions where credit card penetration may be limited. It's a valuable payment option for both merchants and users, supporting monetization strategies for mobile applications and digital content.

Understanding Carrier Billing is crucial for businesses involved in e-commerce, mobile app development, and digital content distribution. Integrating carrier billing as a payment option can broaden the user base, increase conversion rates, and enhance the overall user experience by providing a convenient and familiar payment method.