An illustrative method, system, and device for communicating a message over a network between a trusted service manager and a mobile device having a security element includes the steps of: providing a message having a header field and a message field; providing a number in the header field that is unique to the mobile device; providing a message in the message field, the message coming from the mobile device if communicated from the mobile device to a trusted service manager and coming from the trusted service manager if communicated from the trusted service manager to the mobile device; and providing a messaging protocol that enables the network to distinguish between a message having the unique mobile device number in the header field and a message that is without the unique mobile device number in the header field.
