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Methods and apparatus for controlling power to electrical circuitry of a wireless communication device having a subscriber identity module (SIM) interface

  • US 20040121793A1
  • Filed: 04/30/2003
  • Published: 06/24/2004
  • Est. Priority Date: 12/24/2002
  • Status: Abandoned Application
First Claim
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1. A method of controlling power to electrical circuitry of a battery-powered wireless communication device, the method comprising the further acts of:

  • receiving a power-off signal from a user interface of the wireless communication device;

    powering down radio frequency (RF) transceiver circuitry of the wireless communication device in response to the power-off signal; and

    maintaining power to a smart card interface of the wireless communication device when the RF transceiver circuitry is powered down from the power-off signal.

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