Comment by grapheneos

Fairphone's updates are definitely much worse than recent Samsung flagships. It's the other way around to an extreme. Samsung does monthly security patches for their flagships and includes a large subset of security preview patches. It's not as good as GrapheneOS security preview releases but they're ahead of the Android security bulletins.

Fairphone is 1-2 months behind the Android security bulletins which are themselves 2-4 months behind the security preview patches. Fairphone takes a year to port to a new OS version shortly after launch and then ends up taking increasingly more time.