Section: 4.1.1.9 Equivalent PLMNs list
Content: The mobile equipment shall store a list of "equivalent PLMNs". These PLMNs shall be regarded by the MS as equivalent to each other for PLMN selection and cell selection/re-selection. The same list is used by 5GMM, EMM, GMM and MM (see 3GPP TS 24.501[ Non-Access-Stratum (NAS) protocol for 5G System (5GS); Stage 3 ]  [167] and 3GPP TS 24.301[ Non-Access-Stratum (NAS) protocol for Evolved Packet System (EPS); Stage 3 ]  [120]). The list of equivalent PLMNs is replaced or deleted at the end of each location updating procedure, routing area updating procedure and GPRS attach procedure. The stored list consists of a list of equivalent PLMNs as downloaded by the network plus the PLMN code of the registered PLMN that downloaded the list. The stored list shall not be deleted when the MS is switched off. The stored list shall be deleted if the SIM/USIM is removed or when an MS attached for emergency bearer services enters the state GMM-DEREGISTERED. The maximum number of possible entries in the stored list is 16.