A display system for an electronic device includes a first sub-display and a second sub-display in signal communication with the first sub-display. The sub-displays together may display related information within a given category, such as time, weather, messages, etc. The display system also may include a navigation mechanism that permits the user to navigate through and select data items from at least one of the first or second sub-displays. In response to a data selection, at least one of the sub-displays alters its view such that the sub-displays together may display a new dataset of related information within the given category. The navigation mechanism also may be used to toggle through various additional categories of information. In an exemplary embodiment, the display system may be the external display of a clamshell mobile telephone in the closed position.