3GPP 24.501 v20.0.0 — the document's own text

5.2.2.4 Substate when back to state 5GMM-DEREGISTERED from another 5GMM state

Taught in 4. Inside TS 24.501, the document at the centre (CT1 — the group that writes what your phone says, overview).

When returning to state 5GMM-DEREGISTERED, the UE shall select a cell as specified in 3GPP TS 38.304 [28] or 3GPP TS 36.304 [25C].

The substate depends on the result of the cell selection procedure, the outcome of the previously performed 5GMM specific procedures, on the 5GS update status of the UE, on the tracking area data stored in the UE, on the presence of the USIM, on the UE configuration and on the reason for moving to 5GMM-DEREGISTERED:

If no cell has been found, the substate is NO-CELL-AVAILABLE, until a cell is found;
If no USIM is present or if the inserted USIM is considered invalid by the UE, the substate shall be NO-SUPI;
If a suitable cell has been found and the PLMN or tracking area is not in one of the forbidden lists, the substate shall be NORMAL-SERVICE;
If an initial registration shall be performed (e.g. network-requested re-registration), the substate shall be ATTEMPTING-REGISTRATION;
If a PLMN reselection or SNPN reselection (according to 3GPP TS 23.122 [5]) is needed, the substate shall be PLMN-SEARCH;
If the selected cell is known not to be able to provide normal service, the substate shall be LIMITED-SERVICE; and
If the UE is configured for eCall only mode as specified in 3GPP TS 31.102 [22], T3444 and T3445 have expired or are not running, and substate PLMN-SEARCH is not required, the substate shall be eCALL-INACTIVE.