The only huge benefit of the Blackphone is the virtual spaces. Trying to emulate that in standard Android is giving me a headache.
I have been using CopperheadOS https://copperhead.co/android/ for a month now and like it a lot. I have read their security documentation and keep track of them on Twitter. It works on Nexus 6P and is very fast and stable. I am no security expert and a lot of their documentation is over my head but what I do read inspires confidence.
All vendors aught to take this approach. Less black market trade means lower prices. At least it should. Cool post Dermot7