Question: What happens to the stored UE Radio Capability for Paging Information when a UE performs an Attach procedure or a Tracking Area Update procedure for the "first TAU following GERAN/UTRAN/ Attach" or for "UE radio capability update"?
Option 1: The MME updates the existing information with new values.
Option 2: The MME stores the new information in addition to the existing one.
Option 3: The MME ignores the new information and continues using the existing one.
Option 4: The MME deletes all UE Radio Capability for Paging Information that it has stored for that UE.
Explanation: According to the text, when a UE performs an Attach procedure or a Tracking Area Update procedure for the "first TAU following GERAN/UTRAN/ Attach" or for "UE radio capability update", the MME shall delete all UE Radio Capability for Paging Information that it has stored for that UE. This is done to ensure that the MME has the most up-to-date information about the UE's capabilities, which is essential for efficient paging and other procedures.