The invention provides devices, methods and graphical user interfaces for system-wide behavior for 3D models. A computer system having a display, a touch-sensitive surface, and one or more cameras displays a representation of a virtual object in a first user interface area on the display. A first input made by contact is detected at a location on the touch-sensitive surface that corresponds to therepresentation of the virtual object on the display. By responding to detection of the first input by the contact: a second user interface area is displayed on the display according to determining that the first input by the contact satisfies the first criterion, including replacement of at least one part of the displaying of the first user interface area; the first user interface area has a representation of the field of view of one or more cameras; and a representation of the virtual object is continuously displayed when displaying of the first user interface area is switched to displayingof the second user interface area.