NAS timer when UE request PDU session

[Hainm]

@RFSpecialist

5G SA question: which NAS timer rules when the UE should requests a PDU session establishment to AMF after attach complete?

As per my understanding, in 4G after attach UE has default bearer.
But in 5G SA, after attach UE still not have default bearer, must be after pdu session establishment, right?