Direct Carrier Billing (DCB) – also known as ‘Direct Operator Billing’ enables telco service providers to charge mobile phone users directly for the use of additional services and other purchases made using their smartphones. Research suggests that there are currently over 6.8 billion* active mobile phone accounts globally, compare that with the 2.15 billion credit card accounts, and it is easy to see why mobile payments are on the up and up. The great benefit of DCB is that users can make purchases without having to enter their credit or debit card details.