>GrapheneOS has "2G Network Protection" which prevents your phone from connecting to 2G networks and it also can notify you if your cellular identifiers were accessed.
You should realistically be changing to it to "5G or LTE only", even better "5G only". The latter should provide complete protection from IMSI/IMEI sniffing by rogue base stations.
You should realistically be changing to it to "5G or LTE only", even better "5G only". The latter should provide complete protection from IMSI/IMEI sniffing by rogue base stations.