akc3n thanks but my question was a bit different: I am not talking about vanadium or google play i just wonder if ALL the app you install in Grapheneos are sandboxed or not.
Why this question on the nitrophone website (Nitrophone have Grapheneos as OS) they claim that ALL apps (Whatsapp, Signal, Telegram, etc) are sandboxes, but I could not find any trace of it in your user guide.
So I do wonder are all the app sandboxed or not?
https://www.nitrokey.com/news/2021/nitrophone-most-secure-android-planet
"All apps are sandboxed to protect against exploitable and malicious apps"