Abstract: An electronic device with a display, a touch-sensitive surface, and one or more sensors to detect intensity of contacts with the touch-sensitive surface displays a first user interface of a first software application, detects an input on the touch-sensitive surface while displaying the first user interface, and, in response to detecting the input while displaying the first user interface, performs a first operation in accordance with a determination that the input satisfies intensity input criteria including that the input satisfies a first intensity threshold and the input remains on the touch-sensitive surface for a first predefined time period, and performs a second operation in accordance with a determination that the input satisfies tap criteria including that the input ceases to remain on the touch-sensitive surface during the first predefined time period.

Abstract: An electronic device with a touch-sensitive surface, a display, and one or more sensors to detect intensity of contacts: displays a first user interface that includes objects of a first type and objects of a second type; detects a first portion of a first input that includes an increase in characteristic intensity of a first contact above an intensity threshold while a focus selector is over a respective user interface object; in response, displays supplemental information associated with the respective user interface object; while displaying the supplemental information, detects an end of the first input; and, in response: if the respective user interface object is the first type of object, ceases to display the supplemental information; and, if the respective user interface object is the second type of object, maintains display of the supplemental information after detecting the end of the first input.

Abstract: An electronic device with a display, a touch-sensitive surface, and one or more sensors to detect intensity of contacts with the touch-sensitive surface displays a first user interface of a first software application, detects an input on the touch-sensitive surface while displaying the first user interface, and, in response to detecting the input while displaying the first user interface, performs a first operation in accordance with a determination that the input satisfies intensity input criteria including that the input satisfies a first intensity threshold, and performs a second operation in accordance with a determination that the input satisfies pan criteria including that the input has moved across the touch-sensitive surface by at least a predefined distance.

Abstract: An electronic device displays, on a display, a user interface. While displaying the user interface, the device detects an input on the touch-sensitive surface; and, in response to detecting the input while displaying the first user interface, and while detecting the input, in accordance with a determination that the input satisfies an activation intensity threshold, performs a first operation. The activation intensity threshold includes a first intensity threshold component that decreases from a first intensity value over time.

Abstract: An electronic device displays, on a display, a user interface. While displaying the user interface, the device detects an input on the touch-sensitive surface; and, in response to detecting the input while displaying the first user interface, and while detecting the input, in accordance with a determination that the input satisfies first timing criteria and first intensity input criteria, performs a first operation. The first timing criteria require that the input remain on the touch-sensitive surface while a first time period elapses. The first intensity input criteria require that the input satisfy a first intensity threshold at an end of or subsequent to the first time period.

Abstract: A method includes: displaying a first view of a first application; detecting a first portion of a first input; if the first portion of the first input meets application-switching criteria, concurrently displaying portions of the first application view and a second application view; while concurrently displaying the portions of the application views, detecting a second portion of the first input; if the second portion of the first input meets first-view display criteria (liftoff of contact detected in a first region), ceasing to display the portion of the second application view and displaying the first application view; and if the second portion of the first input meets multi-view display criteria (liftoff of contact detected in a second region), maintaining concurrent display of a portion of the first application view and a portion of the second application view on the display after detecting the liftoff of the contact.

Abstract: An electronic device with a touch-sensitive surface, a display, and one or more sensors to detect intensity of contacts: displays user interface objects in a first user interface; detects an input by a contact while a focus selector is over a first user interface object; if the input meets selection criteria, displays a second user interface; if a first portion of the input meets preview criteria, displays a preview area overlaid on at least some of the user interface objects, wherein the preview area includes a reduced scale representation of the second user interface; if a second portion of the input meets user-interface-replacement criteria, replaces display of the first user interface and the overlaid preview area with display of the second user interface; and, if the second portion of the input meets preview-area-disappearance criteria, ceases to display the preview area and displays the first user interface after the input ends.

Abstract: An electronic device displays a user interface of a first third-party application that runs within an operating system. The device detects an input on a touch-sensitive surface at a location that corresponds to a first portion of the user interface of the first third-party application. If the input meets first gesture recognition criteria and the input meets first intensity criteria specified by the first third-party application, the device performs the first operation associated with the first portion of the user interface of the first third-party application. If the input meets the first gesture recognition criteria but does not meet the first intensity criteria specified by the first third-party application, the device forgoes performance of the first operation associated with the first portion of the user interface of the first third-party application.

Abstract: An electronic device with a display, a touch-sensitive surface, and one or more sensors to detect intensity of contacts with the touch-sensitive surface displays a first user interface of a first software application, detects an input on the touch-sensitive surface while displaying the first user interface, and, in response to detecting the input while displaying the first user interface, performs a first operation in accordance with a determination that the input satisfies intensity input criteria including that the input satisfies a first intensity threshold during a first predefined time period, and performs a second operation in accordance with a determination that the input satisfies long press criteria including that the input remains below the first intensity threshold during the first predefined time period.

Abstract: An electronic device with a display, a touch-sensitive surface, and one or more sensors to detect intensity of contacts with the touch-sensitive surface displays a first user interface of a first software application, detects an input on the touch-sensitive surface while displaying the first user interface, and, in response to detecting the input while displaying the first user interface, performs a first operation in accordance with a determination that the input satisfies intensity input criteria including that the input satisfies a first intensity threshold and the input remains on the touch-sensitive surface for a first predefined time period, and performs a second operation in accordance with a determination that the input satisfies tap criteria including that the input ceases to remain on the touch-sensitive surface during the first predefined time period.

Abstract: An electronic device with a display, a touch-sensitive surface, and one or more sensors to detect intensity of contacts with the touch-sensitive surface displays a first user interface of a first software application, detects an input on the touch-sensitive surface while displaying the first user interface, and, in response to detecting the input while displaying the first user interface, performs a first operation in accordance with a determination that the input satisfies intensity input criteria including that the input satisfies a first intensity threshold, and performs a second operation in accordance with a determination that the input satisfies pan criteria including that the input has moved across the touch-sensitive surface by at least a predefined distance.

Abstract: A method includes: displaying a first view of a first application; detecting a first portion of a first input; if the first portion of the first input meets application-switching criteria, concurrently displaying portions of the first application view and a second application view; while concurrently displaying the portions of the application views, detecting a second portion of the first input; if the second portion of the first input meets first-view display criteria (liftoff of contact detected in a first region), ceasing to display the portion of the second application view and displaying the first application view; and if the second portion of the first input meets multi-view display criteria (liftoff of contact detected in a second region), maintaining concurrent display of a portion of the first application view and a portion of the second application view on the display after detecting the liftoff of the contact.

Abstract: A method includes: displaying a first view of a first application; detecting a first portion of a first input; if the first portion of the first input meets application-switching criteria, concurrently displaying portions of the first application view and a second application view; while concurrently displaying the portions of the application views, detecting a second portion of the first input; if the second portion of the first input meets first-view display criteria (liftoff of contact detected in a first region), ceasing to display the portion of the second application view and displaying the first application view; and if the second portion of the first input meets multi-view display criteria (liftoff of contact detected in a second region), maintaining concurrent display of a portion of the first application view and a portion of the second application view on the display after detecting the liftoff of the contact.

Abstract: An electronic device displays, on a display, a user interface. While displaying the user interface, the device detects an input on the touch-sensitive surface; and, in response to detecting the input while displaying the first user interface, and while detecting the input, in accordance with a determination that the input satisfies first timing criteria and first intensity input criteria, performs a first operation. The first timing criteria require that the input remain on the touch-sensitive surface while a first time period elapses. The first intensity input criteria require that the input satisfy a first intensity threshold at an end of or subsequent to the first time period.

Abstract: An electronic device displays, on a display, a user interface. While displaying the user interface, the device detects an input on the touch-sensitive surface; and, in response to detecting the input while displaying the first user interface, and while detecting the input, in accordance with a determination that the input satisfies an activation intensity threshold, performs a first operation. The activation intensity threshold includes a first intensity threshold component that decreases from a first intensity value over time.

Abstract: An electronic device with a touch-sensitive surface, a display, and one or more sensors to detect intensity of contacts: displays a first user interface that includes objects of a first type and objects of a second type; detects a first portion of a first input that includes an increase in characteristic intensity of a first contact above an intensity threshold while a focus selector is over a respective user interface object; in response, displays supplemental information associated with the respective user interface object; while displaying the supplemental information, detects an end of the first input; and, in response: if the respective user interface object is the first type of object, ceases to display the supplemental information; and, if the respective user interface object is the second type of object, maintains display of the supplemental information after detecting the end of the first input.

Abstract: An electronic device with a touch-sensitive surface, a display, and one or more sensors to detect intensity of contacts: displays user interface objects in a first user interface; detects an input by a contact while a focus selector is over a first user interface object; if the input meets selection criteria, displays a second user interface; if a first portion of the input meets preview criteria, displays a preview area overlaid on at least some of the user interface objects, wherein the preview area includes a reduced scale representation of the second user interface; if a second portion of the input meets user-interface-replacement criteria, replaces display of the first user interface and the overlaid preview area with display of the second user interface; and, if the second portion of the input meets preview-area-disappearance criteria, ceases to display the preview area and displays the first user interface after the input ends.