Apparatus and methods provide remote access to subscriber identity information and subscriber configuration information stored on one or more subscriber identity modules (SIMs), to allow remote configuration of wireless communications devices. A SIM server provides access to the SIMs, a SIM librarian catalogs the SIMs, and a SIM accounting system tracks and/bills for SIM usage. Apparatus and methods provide remote access to proxy wireless communications devices, allowing such devices to operate as if actually present in the remote locations.