Orga SIM Simulator | GSM SIM Simulator - The Orga/Comprion SIM Simulator allows the GSM handset developer to perform various types of testing including type approval testing, SIM Application toolkit testing, and interoperability testing. For these applications the SIM Simulator is used to simulate a SIM card both electrically and logically, and so enable the developer to verify that a GSM Mobile Station (MS) handles it correctly. V.2.04