While concurrently displaying representations of a plurality of recently used applications, including a first application representation that corresponds to a first application and a second application representation that corresponds to a second application, at least a first portion of a first user input, including first movement of an input object, is detected. If the first movement of the input object includes movement in a first direction that meets first criteria, the representations of the plurality of recently used applications cease to be displayed and an application launching user interface is displayed. If the first movement of the input object includes movement in a second direction that meets second criteria, the representations of the plurality of recently used applications cease to be displayed and a first user interface of the first application is displayed in an enhanced-reachability mode and shifted in a predefined direction at least partially off of the display.