The operating system handles file associations, determining which application launches when a specific file type is selected. For example, tapping a .PDF file might automatically open it in a designated PDF viewer, or clicking a .JPG image might initiate its display within a photo gallery application. This functionality streamlines user interaction, allowing for quick access to content. The “default app” is the application pre-selected to handle a certain file format.
Managing file associations grants users control over their mobile experience, potentially improving efficiency. Choosing preferred applications enhances workflow and customization. Historically, managing these associations was more complex, requiring advanced user knowledge or third-party applications. Modern versions of the Android operating system provide more accessible methods for modifying the default app settings.