Abstract: A wireless telephone comprising a basic telephone module adapted to perform time critical functions, and an enhanced services module adapted to perform non time critical functions is disclosed. The basic telephone module includes processing resources needed to provide communication, while the enhanced services module performs enhanced functions which can be performed on a non time critical basis so that processing resources belonging to the basic telephone module do not need to be diverted to these functions but instead can be dedicated to performing time critical functions. The basic telephone module can be removed from the enhanced services module and connected to a different enhanced services module, similarly, the enhanced services module can be removed from the basic telephone module and connected to a different basic telephone module.