An electronic device displays a control user interface that includes a plurality of control affordances. The device detects an input by a contact at a location on the touch-sensitive surface that corresponds to a control affordance, of the plurality of control affordances, on the display. In response to detecting the input, when a characteristic intensity of the contact does not meet an intensity threshold, the device toggles a function of a control that corresponds to the control affordance; and when the characteristic intensity of the contact meets the intensity threshold, the device displays modification options for the control that correspond to the control affordance. While displaying the modification options, the device detects a second input that activates a modification option of the modification options. The device modifies the control that corresponds to the control affordance in accordance with the activated modification option.