&gt; I&#x27;d like a secure messaging app that can be installed on a more hardened version of Android like CopperheadOS, which does not require the constant &#x27;phoning home&#x27; to Google that most Android phones do.<p>I found this [0] today. You might be interested in the last paragraph of the comment. Enjoy!<p>[0] <a href="https:&#x2F;&#x2F;github.com&#x2F;LibreSignal&#x2F;LibreSignal&#x2F;issues&#x2F;37#issuecomment-217673506" rel="nofollow">https:&#x2F;&#x2F;github.com&#x2F;LibreSignal&#x2F;LibreSignal&#x2F;issues&#x2F;37#issueco...</a>