this post was submitted on 15 Apr 2025
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that's not true. the system does not decrypt itself in one go. it'll just wait with part of the bottup process until you unlock your device, and then keeps the encryption keys in memory so that it can encrypt and decrypt anything when needed.
and the purpose of the reboot is just to make sure that both the encryption key, and any data crumbs left in the memory get lost from there
that's not true either. for instance the system definetly runs with a couple of its components. but apps too can request to be able to work before unlock, like your alarm clock. but of course, apps that store data in the compartment accessible before unlock is not secure, however they can selectively store there only the most essential things needed to work (alarm time database and maybe used ringtones)