The operating system on mobile devices allows users to select which application handles specific actions, such as opening web links, sending text messages, or making phone calls. The assigned application for each of these actions is considered the primary, or designated, application. As an example, if multiple web browsers are installed, one can be designated to open all website addresses clicked on from within other applications or from the device’s interface.
The ability to designate specific applications grants users enhanced control over their mobile experience. This customization ensures personal preferences and specific software features are readily accessible. Historically, mobile operating systems offered limited customization options, necessitating specialized applications to modify core system behaviors. Modern operating systems now provide intuitive methods to manage these application preferences directly, contributing to improved usability and streamlined workflows.