Abstract: A method includes sending to a user device prefetch notifications, which notify the user device of available prefetch updates. Requests are received from the user device for one or more first prefetch updates, selected by the user device in response to the prefetch notifications. Selected prefetch updates are delivered to the user device, including both (i) one or more of the requested first prefetch updates, and (ii) one or more second prefetch updates selected from among the available prefetch updates not in response to any request from the user device.

Abstract: A method for content delivery includes defining a guaranteed prefetching mode, in which content is continuously prefetched from a content source to a communication terminal of a user so as to maintain the communication terminal synchronized with the content source. One or more time-of-day intervals, during which the user is expected to access given content, are identified. During the identified time-of-day intervals, the given content is prefetched from the content source to the communication terminal using the guaranteed prefetching mode.

Abstract: A system includes a network interface and one or more processors. The processors are configured to track a first pattern with which a user terminal consumes one or more data services while served by a home network specified for the user terminal, to track a second pattern with which the user terminal consumes the one or more data services while served by one or more networks other than the home network, to estimate a reduction in usage of the one or more data services between the first and second patterns, and to selectively enable at least one data service to the user terminal by the networks other than the home network, based on the estimated reduction in usage.