A system and method that enables large content data transfers to mobile platforms is provided. The mobile platform cache system and method provided build a cache suitable for large content data transfers using the available storage capacity of one or more frequently used, existing mobile devices. The provided mobile cache system and method prioritize available free or low cost communication protocols for data transfer to one or more mobile devices, enabling the use of free Wi-Fi communications or low cost communications, and minimizing the use of cellular data transmissions for large content data transfers.