1. A system to deliver content to a mobile device based on a policy, the system, comprising: a content source configured to provide content selected at the mobile device to a content server, the content source further configured to modify content selected by the mobile device prior to the content server providing the selected content to the mobile device; and a content server configured to discover content at a content source and provide a list of detected content to the mobile device for selection, the content server further configured to instruct the content source to provide the content in accordance with a policy, the content server including a policy enforcement engine configured to implement a policy; wherein, the policy includes a service provider policy to enforce service policy on the mobile device.