1. A method comprising: forwarding, by a content server, a request for content initiated by a mobile device to content source, wherein the content is located at the content source; processing, by the content server, metadata associated with requested content to determine if whether the requested content complies with a policy, responsive to forwarding the request to the content source, the metadata associated with the requested content is received from the content source without the requested content, and wherein the policy includes a service provider policy to enforce service policy on the mobile device; instructing the content source to modify the requested response content by changing an image file or video file from a first size to a second size to comply with the policy, and instructing the content source to transfer the content to the mobile device.