http://isdb4l77sjqoy2qq7ipum6x3at6hyn3jmxfx4zdhc72ufbmuq4ilwkqd.onion/blog/20230328-simplex-chat-v4-6-hidden-profiles.html
If you install the app from GitHub or F-Droid you need to choose the correct APK, Play Store will provide it automatically. Hidden chat profiles For a long time the main way to protect SimpleX Chat app from people who have access to your phone was device authentication - it is requested when you open the app (and some of its sensitive functions).