In response to a first press input, a device displays a control corresponding to a control function with a first size and with a value indicator representing that a current value of the control function. After displaying the control with the first size and the value indicator, if a subsequent press input has not been detected within a threshold time, the device ceases to display the control; and if a second press input is detected on the same input region within the threshold time: the device adjusts the current value of the control function in accordance with the second press input; the device adjusts a size of the first control from the first size to a second size; and the device changes an appearance of the value indicator to represent that the current value of the control function is the second value.