Question: Which of the following security features is NOT primarily supported by the USIM (Universal Subscriber Identity Module) for enabling secure interactions?
Option 1: Authentication of the USIM to the network
Option 2: Data confidentiality over the radio interface
Option 3: End-to-end encryption for voice calls between two UEs (User Equipment)
Option 4: Conversion functions to derive GSM parameters
Explanation: While the USIM supports various security features like authentication, data confidentiality over the radio interface, file access conditions, and conversion functions for deriving GSM parameters, end-to-end encryption for voice calls between two UEs is not primarily facilitated by the USIM's security features, but rather through other network or device-level implementations.