Question: When a UE has both 3GPP and non-3GPP accesses to the network, what determines whether MT-SMS is delivered via non-3GPP access?
Option 1: The type of message being sent
Option 2: The UE's current location
Option 3: The AMF's available resources
Option 4: Operator policy in step 4
Explanation: According to the MT SMS procedure via non-3GPP access, if the UE has both 3GPP and non-3GPP accesses to the network, the AMF determines whether to deliver MT-SMS via non-3GPP access based on operator policy in step 4. This highlights the importance of operator policies in shaping the behavior of the 5GS network, particularly when it comes to message delivery.