Signal is THE secure messaging app. And you need to be using it. Especially these days with all of the omni-surveillance that we have going on.

• https://signal.org/
• https://www.wired.com/story/ditch-all-those-other-messaging-apps-heres-why-you-should-use-signal/
• https://www.popularmechanics.com/technology/apps/a25736/signal-app-guide-how-to-use/
• https://ssd.eff.org/en/module/how-use-signal-android