Abstract: A key-based advanced navigation system comprising: a key-based input component which maps to one or more segments of content displayed on a portable device screen, the key-based input component comprising any number of numeric keys and non-numeric keys; a navigation component that facilitates navigating through the content in part according to the input received from the input component; and a mappig component that smoothly transitions a current view to a new or previous view and orients the content and/or the view thereof within the portable device screen based in part on data received from the input component and the navigation component.