1. A method for prefetching sync data, comprising: providing unprocessed sync data at a first location; downloading the unprocessed sync data from the first location to a second location over a first network; processing the unprocessed sync data at the second location to provide preprocessed sync data; storing the preprocessed sync data in a cache; receiving a sync request from a mobile device; and immediately providing at least a portion of the preprocessed sync data stored in the cache to the mobile device.