Question: What is a key aspect of the procedure for unblocking the PIN or PIN2 on a User Equipment (UE)?
Option 1: The existing PIN/PIN2 must be entered before providing the new one.
Option 2: The SEND function is mandatory to complete the unblocking process.
Option 3: A new PIN/PIN2 must always be entered, even if no change is intended.
Option 4: The procedure can only be initiated after a specific time interval from the last blocking event.
Explanation: This option highlights an important detail in the unblocking process. Even if the user does not wish to change their PIN or PIN2, entering a new one (which could be the same as the old one) is still required to complete the procedure successfully, ensuring an additional layer of security and confirmation from the user.