@emilygorcenski
It's about either or not your device is in an After First Boot state or not. Android and iOS both have access to your files when your phone is in a running system your lock screen is just a method of preventing the screen from being accessed. Something that uses direct memory access can entirely bypass your password and just make use of the OS's access (easy) or even make use of the cached encryption key to dump the whole unencrypted disk image (hard).
https://securephones.io/main.pdf
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