The function that allows two applications to occupy the screen simultaneously on Android devices enhances multitasking capabilities. The deactivation of this specific function restricts the user interface to a single, full-screen application at any given time. For example, where a user typically views a video at the top of the screen and browses social media at the bottom, disabling this feature would force the video and social media applications to operate independently, each taking up the entire display when in use.
Limiting application visibility to a single instance can improve focus and reduce potential distractions. Historically, the introduction of multi-window functionality on Android aimed to improve productivity. However, some users prefer a simpler, single-application environment for tasks requiring concentration or when screen real estate is limited. Furthermore, preventing the operating system from dividing the screen can, in certain scenarios, improve device performance by reducing the resources dedicated to managing multiple active applications.