A system, apparatus, and method for controlling the operation of a service in a client device. The invention uses an existing protocol which is used for communications between an application resident in the device and a remote server to convey information about the service to the application. The information may be relevant to a service specific function, such as configuration or provisioning, or an activation or de-activation instruction, for example. The application receives the service related information, processes the information and then provides the information to the service via a notification channel. The service related information may be incorporated into a message sent from the remote server to the client device by using an element of the protocol, for example, by appending a text string to a header.