Key Design Differences Between Phone and Tablet Interactions

Phones	Tablets
Single, focused area for content	Potential for multiple areas of content, where appropriate
Limited on-screen actions, exposing only highest priority functions	Ability to expose a greater number of on-screen actions that are high-priority
Mainly list-based navigation, optimized for the small screen	Potential for more fun, intuitive navigation with greater emphasis on visual objects
Navigation through many screens of content	Navigation between screens kept to a minimum. Content can be displayed in multiple panes or brought in via interactive pop-ups.

Note for current webOS developers:

The physical gesture area present on current webOS phones will be omitted from the TouchPad and some future phones. Actions previously tied to back and forward gestures should be accomplished via direct manipulation (for example, sliding UI panes to show or hide the pane) or explicit buttons (for example, "OK", "Cancel", "Done").