Methods and apparatus for controlling power to electrical circuitry of a wireless communication device having a subscriber identity module (SIM) interface
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United States of America Patent
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Issued Date -
Jun 24, 2004
app pub date -
Apr 30, 2003
filing date -
Dec 24, 2002
priority date (Note) -
Abandoned
status (Latency Note)
Importance
Abstract
Methods and apparatus for controlling power to electrical circuitry of a wireless communication device having a Subscriber Identity Module (SIM) interface are described. In one illustrative embodiment, a method includes the acts of receiving a power down 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 down signal; and maintaining power to a SIM interface of the wireless communication device while the RF transceiver circuitry is powered down from the power down signal. A visual display of the device is capable of displaying information (e.g. address book information) from a SIM card while the RF transceiver circuitry is powered down from the power down signal.
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