9jaCodes is an application that provides an interface to users, allowing them to request a callback from a contact with respect to a particular network by just clicking a button. It is a very easy-to-use application and a user can add their own USSD codes to the list and can choose either to dial or delete this code later.

This is a very useful application for users who are subscribed to a particular network and need to get a Callback from another contact with respect to that network. It also allows them to add their own USSD codes to the list and can choose either to dial or delete this code later.