An electronic device displays a home screen and detects a first input on a first application launch icon; in response to detecting the first input, replaces the home screen with a first user interface; while displaying the first user interface, detects a second input by a second contact that includes movement across the display in a first direction; and in response to detecting the second input: if the second input meets dock-display criteria (e.g., includes movement of the second contact that is above a first movement threshold), displays a user interface object overlaid on a portion of the first user interface; and in accordance with a determination that the second input meets home-display criteria (e.g., includes movement of the second contact that is above a second movement threshold that is greater than the first movement threshold), replaces display of the first user interface with display of the home screen.