In this case, a pixel 5a5g with GrapheneOS. I use my phone as an additional backup location for all the various files on my laptop. I have yet to set the fingerprint sensor, because I don’t trust them, but I always make sure to set an eight digit pin screen lock before leaving the house. Now say I went out with my phone in this state and lost it. Anyone who found it, I realize, with evil intentions would probably just want to wipe it and sell it. But even so, how hard would it be for them to access the private data on my phone in a situation like this?
You’ll be relying on the phone’s hardware secure element (think the 5a has the titan m) to throttle attempts of bruteforcing so its pretty damn secure unless someone makes you input or if the attacker records you inputting your passcode here’s a link to grapheneos’ faq that explains significantly more on its encryption security and how its implemented. Besides that enable auto reboot and pin scrambling for added protection if you haven’t already.