A method of operating an electronic device with a touch-sensitive display , one or more processors , and memory , the method comprising: detecting a first user input (620-1); in response to detecting the first user input, displaying on the touch-sensitive display a user interface (610-2) including concurrently displaying, on the touch-sensitive display, a first affordance (610-1) and a second affordance (610-3); while displaying the user interface (610-2) that includes the first affordance (610-1) concurrently displayed with the second affordance (610-3), detecting a second user input (620-2, 620-4) including detecting a contact on the touch-sensitive display; and in response to detecting the second user input while displaying the user interface that includes the first affordance (610-1) concurrently displayed with the second affordance (610-3): in accordance with a determination that the contact corresponds to selection of the first affordance (610-1) that is concurrently displayed with the second affordance, wherein selection of the first affordance (610-1) includes movement of the contact from a first predetermined location on the touch-sensitive display to a second location different from the first location on the touch-sensitive display, causing the electronic device to turn off; and in accordance with a determination that the contact corresponds to selection of the second affordance (610-3) that is concurrently displayed with the first affordance, wherein selection of the second affordance (610-3) includes movement of the contact from a third predetermined location on the touch-sensitive display to a fourth location different from the third location on the touch-sensitive display, causing initiation of a telephone call to a determined number. detecting a first user input (620-1); in response to detecting the first user input, displaying on the touch-sensitive display a user interface (610-2) including concurrently displaying, on the touch-sensitive display, a first affordance (610-1) and a second affordance (610-3); while displaying the user interface (610-2) that includes the first affordance (610-1) concurrently displayed with the second affordance (610-3), detecting a second user input (620-2, 620-4) including detecting a contact on the touch-sensitive display; and in response to detecting the second user input while displaying the user interface that includes the first affordance (610-1) concurrently displayed with the second affordance (610-3): in accordance with a determination that the contact corresponds to selection of the first affordance (610-1) that is concurrently displayed with the second affordance, wherein selection of the first affordance (610-1) includes movement of the contact from a first predetermined location on the touch-sensitive display to a second location different from the first location on the touch-sensitive display, causing the electronic device to turn off; and in accordance with a determination that the contact corresponds to selection of the second affordance (610-3) that is concurrently displayed with the first affordance, wherein selection of the second affordance (610-3) includes movement of the contact from a third predetermined location on the touch-sensitive display to a fourth location different from the third location on the touch-sensitive display, causing initiation of a telephone call to a determined number. <EOS>