Question: What is the expected behavior of a User Equipment (UE) after successfully executing an Unblock PIN command with a new PIN?
Option 1: The UE accepts both the old and new PINs for further verification.
Option 2: The UE rejects all PIN inputs until a factory reset is performed.
Option 3: The UE temporarily stores the new PIN for single-use verification only.
Option 4: The UE only accepts the new PIN for further PIN verification and provides indication of successful or unsuccessful verification to the user.
Explanation: This behavior ensures secure authentication practices by enforcing the use of a newly set PIN after unblocking, enhancing security for the subscriber's account. The UE will only accept the new PIN and must indicate the outcome (success or failure) of the PIN verification to the user.