Hi,
I'm a bit new to this but I was wondering if this was possible in GraphineOS or something else. I like the privacy features of the phone, but if I was ever forced to give my password to a border guard or someone like that, it wouldn't be that helpful.

Is there a way to set up a secondary password that would open a benign version of your phone so they could examine, find nothing, and then go on your way?

    FreakSire GrapheneOS does not do plausible deniability, and it likely will not anytime soon.

      The casual inspector is unlikely to know about multiple profiles. You could use a secondary profile as your daily driver and your Admin profile could be sterilized.