US Patent 11523269 Multiple profile remote subscriber identity module

A method for initializing an electronic subscriber identity module (SIM) is provided. The method includes selecting a first bootstrap profile out of a plurality of bootstrap profiles configured with a device, wherein the first bootstrap profile is set with a first range of international mobile subscriber identifiers (IMSIs); activating the first bootstrap profile; attempting to connect to a first cellular network through an IMSI in the range of IMSIs; and establishing a connection with a central server when the device is connected to the first cellular network. The method may be operated by any device configured to connected to a cellular network.