They claim the hardware is the most secure and able to run it. I'm not techy enough to know why that would be. But I'm sure each different phone would require specialized coding and formatting, and their team is probably way smaller than everyone working on android. Sorry if that's not real helpful, but its been the best phone I've ever had; been nearly a year. Lightning fast (but I have 0 big tech installed), and auto-updated to android 14. I was also considering lineage os, but I also heard Snowden give a nod to Graphene, so that sold me.