This refers to a set of purposes residing on the Subscriber Identification Module (SIM) card inside a cellular machine. It permits the SIM to provoke actions that aren’t natively obtainable on the telephone itself. These actions can embrace displaying menus, sending SMS messages, or launching particular purposes. A standard instance is the menu introduced by a cellular operator permitting customers to test their account steadiness or entry different community companies immediately from the SIM.
The benefit lies in providing value-added companies, impartial of the machine producer or working system. It supplied an early platform for delivering interactive content material and companies on to cellular customers earlier than the widespread adoption of smartphones and cellular information. Moreover, it may provide enhanced safety features because the purposes run inside the safe surroundings of the SIM card, managed by the cellular community operator.