[chakalakasp]

Thing is, if law enforcement is patient they can get the data off the actual devices themselves, if they're still alive. Yes, a fully patched iPhone tends to be a fortress of might to anyone other than a nation state willing to burn a few very expensive 0 days, but with almost any phone if you wait a year or two something will inevitably come out that will allow the ol' Cellebrite crowbar a cranny to slip into.