GrapheneOS also will restart after 18 hours without being unlocked by default, you can adjust this down to as little as 10 minutes or as long as 72 hours. A reboot forces a phone into the most secure Before First Unlock status. Biometrics do not work there.
GrapheneOS has a duress password: a different PIN you can type in at any unlock prompt that tells your phone to wipe your SIM and contents
GrapheneOS also will restart after 18 hours without being unlocked by default, you can adjust this down to as little as 10 minutes or as long as 72 hours. A reboot forces a phone into the most secure Before First Unlock status. Biometrics do not work there.