Direct carrier billing involves payment using an online method. This permits mobile phone users to make purchases by making payment using the mobile phone. This payment method is present on all feature phones and smartphones. Currently, direct carrier billing is being used to buy content on any digital platform. Direct carrier billing is also known as direct operator billing. Major players involved in the direct carrier billing ecosystem include merchants, billing platform providers, and mobile network operators. Merchants include a list of companies providing platform to customers and the ability to pay using the direct carrier billing payment methods. Billing platform providers include a list of companies that provide technology, which allows merchants to connect with mobile network operators using a single interface. The mobile network operators include the list of companies that provide billing infrastructure, which allows consumers to charge purchases to their phone bills. New pu...