Global platform for managing subscriber identity modules

A method to communicate within a system including a provisioning server and a home location register (HLR), the system in communication with a plurality of wireless networks and a plurality of mobile devices, with each of the wireless networks operated by a different carrier and wherein each carrier allocates a set of international mobile subscriber identities (IMSIs) to the system, the method comprising:

• storing in a home location register (HLR) a plurality of subscription records for a plurality of mobile devices, each mobile device of the plurality of mobile devices having a subscriber identity module (SIM) identified by a currently activated first international mobile subscriber identity (IMSI), the currently activated first IMSI of each mobile device of the plurality of mobile devices belonging to a first set of IMSIs allocated to the system, wherein the provisioning server is operative to:
• confirm that an allocation rule is satisfied for the plurality of mobile devices operating in a first wireless network;
• add and activate a second set of the IMSIs allocated to the system to the HLR and remove the currently activated first set of IMSIs from the HLR;
• and
• send the second set IMSIs on a per device basis to the plurality of mobile devices to enable each mobile device of the plurality of mobile devices to communicate wirelessly in a second wireless network as a local device or a roaming subscriber with a new IMSI, wherein the HLR is distributed among the plurality of wireless networks as a plurality of HLR segments, at least one of the HLR segments is associated with a carrier of one of the wireless networks, the carrier-associated HLR segment being readable and writable by the provisioning server under an agreement between the carrier and a provider of the system.