1. A method comprising: receiving, at a network server, a text message automatically generated by a subscriber identity module (SIM) card of a mobile device in response to association of the SIM card with the mobile device, wherein the text message includes information from the SIM card associated with the mobile device; determining, by the network server, an identifier of the SIM card based on the information; using the identifier to provide application information to the mobile device, the application information being stored on a download server; wherein the information from the SIM card includes the identifier of the SIM card associated with the mobile device and an indication of an application, the download server in communication with the network server and the mobile device and configured to: send a message concerning the application to the mobile device; wherein the message comprises a hyperlink for downloading the application from the download server.