Section: 5.2.2.2.1 Selection of the substate after power on
Content: For a UE configured for eCall only mode as specified in 3GPP TS 31.102[ Characteristics of the Universal Subscriber Identity Module (USIM) application ]  [22], timers T3444 and T3445 are considered to have expired at power on. When the UE is switched on, the substate shall be PLMN-SEARCH if the USIM is available and valid or there are valid entries in the "list of subscriber data". See 3GPP TS 23.122[ Non-Access-Stratum (NAS) functions related to Mobile Station (MS) in idle mode ]  [5] for further details. The substate chosen after PLMN-SEARCH, following power on is: a) if no cell can be selected, the substate shall be NO-CELL-AVAILABLE; b) if the UE is not operating in SNPN access operation mode, and no USIM is present, or the USIM is considered invalid by the UE, the substate shall be NO-SUPI; c) if the UE is operating in SNPN access operation mode, and: 1) the selected entry in the "list of subscriber data" does not contain subscription identifier, and no USIM is present, or the USIM is considered invalid by the UE; or 2) no valid entry in the "list of subscriber data" exists; the substate shall be NO-SUPI; d) if a suitable cell has been found: 1) the PLMN identity of the cell is not in one of the forbidden PLMN lists; 2) if the SNPN is not an SNPN selected for localized services in SNPN (see 3GPP TS 23.122[ Non-Access-Stratum (NAS) functions related to Mobile Station (MS) in idle mode ]  [5]), the SNPN identity of the cell is not in one of the "permanently forbidden SNPNs" list or the "temporarily forbidden SNPNs" list which are, if the MS supports access to an SNPN using credentials from a credentials holder, equivalent SNPNs or both, associated with the selected entry of the "list of subscriber data" or the selected PLMN subscription ; or 3) if the SNPN is an SNPN selected for localized services in SNPN (see 3GPP TS 23.122[ Non-Access-Stratum (NAS) functions related to Mobile Station (MS) in idle mode ]  [5]), the SNPN identity of the cell is not in one of the "permanently forbidden SNPNs for access for localized services in SNPN" list or "temporarily forbidden SNPNs for access for localized services in SNPN" list, associated with the selected entry of the "list of subscriber data" or the selected PLMN subscription; and the tracking area is not in one of the lists of 5GS forbidden tracking areas, then the substate shall be NORMAL-SERVICE; e) if the selected cell is known not to be able to provide normal service, then the UE shall enter the substate LIMITED-SERVICE; f) if the UE is in manual network selection mode and no cell of the selected PLMN or SNPN has been found, the UE shall enter the substate NO-CELL-AVAILABLE; and g) if the UE is configured for eCall only mode as specified in 3GPP TS 31.102[ Characteristics of the Universal Subscriber Identity Module (USIM) application ]  [22], the substate shall be eCALL-INACTIVE.