1.Introduction.2.Keybenefitsandfeaturesof3GUSIM:3.UICC,USIMandSIMrevisited.3.1.ComparingSIMtoUSIM3.1.1.FileStructure.3.1.2.TheUSIMapplication3.1.3.Anexample:Prism3GPhoneBook.3.1.4.Accessconditions.4.TheimpactofUICCandUSIM4.1.EEPROMMemory4.2.PINDefinitions4.3.The