Method of and apparatus for interfacing and connecting a wireless device and a wireless network using a subscriber identity module having plural IMSI associates with different network operators

  • US 8,185,156 B2
  • Filed: 03/07/2007
  • Issued: 05/22/2012
  • Est. Priority Date: 03/07/2006
  • Status: Active Grant
First Claim
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1. A wireless device including a single SIM, the wireless device further including an application module adapted to enable the device to operate as though it included two or more different SIMs in which the device includes two SIM sub-modules, each with a different IMSI and the application module is adapted to switch the single SIM between (a) operating as a local SIM using the first sub-module, which is associated with a network operator 1 based in a country A and (b) operating as a roaming SIM using the second sub-module, which is associated with a network operator 2 based in country B, the switching occurring inside country A under the manual control of a user to obtain lower cost routing when in that country A.

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