a mobile content delivery system that optimizes the delivery of especially bandwidth - consuming content in a way that best utilizes the free capacity in the radio network , thus enabling considerably more efficient usage of the radio capacity . it also allows new services and pricing structures to be used in the cellular network , that otherwise would not be possible . the class of delivery of message content can be selected by the user on a transaction basis , or subscription - based and pre - defined in a user profile . by choosing a scheduled delivery the user can receive the content at a fraction of the price compared to instant delivery , since the content is sent at a time when the network is least utilized .