This technology provides a set of standard commands allowing the Subscriber Identity Module (SIM) to initiate actions that can be used for a variety of value-added services. One example is the capability for a mobile network operator to offer menu-based services directly on a user’s mobile device without requiring the user to download a separate application.
The significance of this system lies in its ability to offer network operators a direct channel to communicate with subscribers, promote services, and deliver information. Historically, it represented an early method for providing interactive services on mobile phones before the widespread adoption of smartphones and app stores. This functionality facilitated mobile banking, information services, and promotional campaigns, offering a convenient user experience.