1. A method, comprising: receiving, by a network device comprising a processor, first registration request data related to a first registration request from a mobile device; sending, by the network device, the first registration request data to a home network device; in response to the sending the first registration request data to the home network device, receiving, by the network device, registration rejection data associated with a rejection of the first registration request from the home network device; in response to the receiving the registration rejection data from the home network device, sending, by the network device, the registration rejection data to the mobile device via a message, wherein the message comprises an event download tag associated with the rejection of the registration request, and wherein the message comprises an identifier that informs a universal integrated circuit card that the message is for an event download; in response to the event download, receiving, by the network device, analysis data related to an analysis of the registration rejection data; and in response to the event download, receiving, by the network device, a second registration request in response to the mobile device moving to a second location based on the analysis of the registration rejection data.