Patent ID: 8364142

Claim:
A method of managing a most recently used (MRU) system identification list of a mobile device, comprising: scanning for available mobile communication network systems and selecting at least one available mobile communication network system found during the scanning, in accordance with a system preference list stored in the mobile device from a carrier providing service to the mobile device; storing an identification of each selected mobile communication network system in the MRU list in the mobile device; scanning for available mobile communication network systems and selecting at least one available mobile communication network system in accordance with the MRU; receiving an update of the system preference list from the carrier providing service, and storing the update of stored system preference list in the mobile device; periodically comparing an identification of the system selected in accordance with the MRU to the stored update of the system preference list, wherein the periodically comparing further comprises comparing systems and order of systems in the MRU list with systems and order of systems in the system preference list; and upon the identification of the system selected in accordance with the MRU not matching an entry in the stored update of the system preference list: (a) scanning for available mobile communication network systems and selecting an available mobile communication network system, in accordance with the stored update of the system preference list; and (b) storing an identification of the mobile communication network system selected in accordance with the stored update of the system preference list, in the MRU list in the mobile device.