An electronic device, with a touch-sensitive surface, displays a respective control, which is associated with respective contact intensity criteria, used to determine whether or not a function associated with the respective control will be performed. The device detects a gesture on the touch-sensitive surface, corresponding to an interaction with the respective control. In accordance with a determination that the gesture does not include a contact that meets the respective contact intensity criteria, the device changes the appearance of the respective control to indicate progress toward meeting the respective contact intensity criteria that is used to determine whether or not a function associated with the respective control will be performed. In response to detecting activation of the control, the device performs the function associated with the respective control in accordance with the detected gesture including a contact that meets the respective contact intensity criteria.