What is a post paid phone number?

A postpaid phone number is a service provided by a mobile network operator where the user pays a bill at the end of the month for the usage of the services provided by the operator. The user can choose a plan with a certain amount of texts, calls, and data, and then use the services accordingly. Additional services, like international calls or roaming charges, may also be included in the bill. The user typically signs a contract with the operator for a fixed period of time such as 12, 18 or 24 months. In case of late payment of the bill, the network provider can restrict or completely cut off the service until the bill is paid.