Question: What is the primary purpose of the **04*** and **042*** codes in the context of SIM/USIM security on a User Equipment (UE)?
Option 1: To initiate a voice call with enhanced security features for PIN-protected numbers.
Option 2: To change the Personal Identification Number (PIN) or PIN2 directly on the SIM/USIM without using the SEND function.
Option 3: To activate/deactivate international roaming services on the UE.
Option 4: To reset the UE to its factory settings, erasing all user data.
Explanation: The codes **04*** and **042*** are specifically designed for modifying the PIN or PIN2 on a SIM/USIM card. This process allows users to update their security credentials directly from their User Equipment (UE), ensuring the security of their mobile services without relying on the SEND function, which is typically used for initiating calls or sending messages. This procedure is crucial for maintaining the confidentiality and integrity of user authentication on telecom networks.