I'm not sure, all of the recent Pixels were on the Cellebrite leak list as accessible without brute-force even while cold. Of course, the recent iPhones were too. Maybe there is no solution, or maybe Cellebrite is lying a little bit with their ads.
Cellebrite has a separate category for GrapheneOS and the most recent leaks indicated up-to-date GrapheneOS was invulnerable to all attacks, whereas the latest iPhones were vulnerable to AFU attacks.
