Patent ID: 8045969

Claim:
A method of controlling operation of a mobile communication device, the method comprising the acts of: detecting whether an operating variable of the mobile device is within one of a first range of values or a second range of values, the operating variable comprising a temperature of the mobile device, the second range of values being greater than the first range of values; causing the mobile device to operate in a full communication state when the operating variable is detected to be within the first range of values; causing the mobile device to operate in a limited communication state when the operating variable is detected to be within the second range of values; receiving, via a user interface of the mobile device, a communication request for establishment of a voice call or for communication of a user data message; in the full communication state, when the communication request is for establishment of an emergency or non-emergency voice call, permitting the emergency or non-emergency voice call to be established via a wireless network; in the full communication state, when the communication request is for communication of a user data message, permitting the user data message to be communicated via the wireless network; in the limited communication state, when the communication request is for establishment of a non-emergency voice call, prohibiting the non-emergency voice call from being established via the wireless network; and in the limited communication state, when the communication request is for establishment of an emergency voice call, permitting the emergency voice call to be established via the wireless network.