im not sure if grapheneos does or not, but it's not a novel idea, and often will only be a delay tactic. forensics will reveal the other partition(s), and then

im not sure if grapheneos does or not, but it's not a novel idea, and often will only be a delay tactic. forensics will reveal the other partition(s), and then you're in the exact same position having to answer "what's the other partition, provide the password"