In accordance with some embodiments, a computer-implemented method is performed at a portable multifunction device with a rectangular touch screen display that includes a portrait view and a landscape view. The method includes detecting the device in a first orientation, and while the device is in the first orientation, displaying an application in a first mode on the touch screen display in a first view. The method also includes detecting the device in a second orientation, and in response to detecting the device in the second orientation, displaying the application in a second mode on the touch screen display in a second view. The first mode of the application differs from the second mode of the application by more than a change in display orientation.