1. A unified device driving method executed in a handheld electronic device, comprising: determining a driver type, the driver type representative of a currently available hardware module on the handheld device; loading, in response to determining said driver type, a plurality of current dispatch table address pointers into a unified dispatch table, the unified dispatch table providing sufficient storage for at least two address pointers for each of a plurality of different hardware configurations, the loading the unified dispatch table including: setting a first current dispatch table address pointer of the plurality of current dispatch table address pointers to an address of a first function of the plurality of functions when the first function is executable fully in the currently available hardware module; setting a second current dispatch table address pointer of the plurality of current dispatch table address pointers to an address of a second function of the plurality of functions when the second function is executable in the combination of the hardware and software; and setting a third current dispatch table address pointer of the plurality of current dispatch table address pointers to an address of a third function of the plurality of functions when the third function is executable fully in the software; making the plurality of current dispatch table address pointers loaded in the unified dispatch table available to a central processing unit; and driving the currently available hardware module with a plurality of functions, each of the plurality of functions associated with one of the plurality of current dispatch table address pointers loaded in the unified dispatch table.