USSD-Ghana is a mobile application that provides an intuitive human-machine interface to subscribers of all telephone networks in Ghana. It allows access to all USSD services available on a particular network without requiring any special memory effort from the users.With USSD-Ghana, a user is able request a Callback from another contact with respect to the given network by just clicking on a button and picking the contact from his phone book.The application also allows for user to add their own USSD codes to the list and can choose either to dial, edit or delete this code later.To used this application on devices running android 6.0 and above, first make sure you turn on permissions for the application(permission to access contact and dial your phone) in your device settings.To access any service from any network, click on the call button that correspond to the service you wish to access.