A method comprising: at a computing system including non-transitory memory and one or more processors, wherein the computing system is communicatively coupled to a display device, one or more input devices, and an image sensor: detecting, via the one or more input devices, a user input that corresponds to a request to set a respective media item as a background for a wake screen user interface; and in response to detecting the user input: in accordance with a determination that the user input corresponds to a request to set a first media item as a background for the wake screen user interface: setting a second media item that is different from the first media item as a background for a home screen user interface; and concurrently displaying, on the display device, a first preview of the first media item being used as a background for the wake screen user interface and the second media item being used as a background for the home screen user interface; and in accordance with a determination that the user input corresponds to a request to set a third media item as a background for the wake screen user interface, setting a fourth media item that is different from the third media item as a background for the home screen user interface. detecting, via the one or more input devices, a user input that corresponds to a request to set a respective media item as a background for a wake screen user interface; and in response to detecting the user input: in accordance with a determination that the user input corresponds to a request to set a first media item as a background for the wake screen user interface: setting a second media item that is different from the first media item as a background for a home screen user interface; and concurrently displaying, on the display device, a first preview of the first media item being used as a background for the wake screen user interface and the second media item being used as a background for the home screen user interface; and in accordance with a determination that the user input corresponds to a request to set a third media item as a background for the wake screen user interface, setting a fourth media item that is different from the third media item as a background for the home screen user interface. in accordance with a determination that the user input corresponds to a request to set a first media item as a background for the wake screen user interface: setting a second media item that is different from the first media item as a background for a home screen user interface; and concurrently displaying, on the display device, a first preview of the first media item being used as a background for the wake screen user interface and the second media item being used as a background for the home screen user interface; and setting a second media item that is different from the first media item as a background for a home screen user interface; and concurrently displaying, on the display device, a first preview of the first media item being used as a background for the wake screen user interface and the second media item being used as a background for the home screen user interface; and in accordance with a determination that the user input corresponds to a request to set a third media item as a background for the wake screen user interface, setting a fourth media item that is different from the third media item as a background for the home screen user interface.