The action of exiting dual window mode on an Android mobile device involves returning the screen display to a single, full-screen application view. This typically occurs when two applications are simultaneously displayed, each occupying a portion of the screen. For instance, if an email application and a web browser are concurrently visible, exiting the dual window configuration restores either application to full-screen visibility.
Restoring a single application view maximizes screen real estate for the selected application, enhancing usability and minimizing distractions. Functionality to quickly revert to a single-screen experience became increasingly important as Android devices adopted larger displays and multitasking capabilities became more prevalent. This enhances user experience by allowing focused interaction with one application at a time.