1. A first multifunction device, comprising: a touch screen display; one or more processors; memory; and one or more programs, wherein the one or more programs are stored in the memory and configured to be executed by the one or more processors, the one or more programs including instructions for: displaying a respective view of a first application on the touch screen display; detecting a first touch gesture within the respective view; in response to detecting the first touch gesture, displaying a popup view of the first application partially covering the respective view of the first application, wherein the popup view corresponds to a full-screen-width view in a corresponding first application on a second multifunction device having a touch screen display with lower resolution than the touch screen display of the first multifunction device; detecting one or more second touch gestures within the popup view; in response to detecting the one or more second touch gestures within the popup view, performing an action in the first application that updates a state of the first application; and ceasing to display the popup view.