A hand held radio host includes circuitry for selectively providing power
to radiating transceiver elements and non-radiating application elements
according to a plurality of power modes of operation to achieve desired
effects and in a way that saves power and extends battery life. In one
embodiment of the invention, the hand held host operates in one of three
modes. In a full power mode, any selected application element as well as
all transceiver elements are powered on at the same time. Thus, for
example, a cell phone module, a wireless personal access network module,
a wireless local area network module and one of a pager/short message
service message module may all be powered on at the same time to receive
corresponding messages, calls, data sessions, etc. At the same time that
all of the transceiver elements are powered on, any selected application
element receives power. Thus, application elements such as address books,
calendar functions, games, word processors, and similar other application
elements may receive power when selected.