Question: What happens to the equivalent PLMNs list stored by the UE when it is switched off?
Option 1: The list is deleted.
Option 2: The list is updated with new PLMNs.
Option 3: The list is kept and used for PLMN selection after switch on.
Option 4: The list is sent to the network for verification.
Explanation: According to the specification, when the UE is switched off, it shall keep the stored list so that it can be used for PLMN selection after switch on. This ensures that the UE can quickly select a suitable PLMN when it is powered back on.