Question: What happens when a User Equipment (UE) attempts to access a hidden phone book entry marked by the Enhanced Phonebook Feature (EFPBC), but the UE does not support Hidden Key Procedures?
Option 1: The UE will display the phone book entry after a brief delay for security checks.
Option 2: The UE will not display the content of the hidden phone book entry, adhering to privacy settings.
Option 3: The UE will prompt the user to update the Hidden Key to enable viewing of the entry.
Option 4: The UE will automatically generate a default Hidden Key to grant access.
Explanation: According to the specified behavior for handling hidden phone book entries, even if the terminal (UE) does not support the Hidden Key Procedures, it is mandated that a hidden phone book entry shall not be displayed by the terminal. This ensures the privacy and security of the hidden entry are maintained, regardless of the device's capability to process the Hidden Key.