If you see compatibility errors, try navigating to the Google Play Store app info in settings and selecting Uninstall updates
Even on an older device, a compatible Messenger APK allows you to: Messenger Apk Android 5.1
User interface (UX) notes
Most users on Android 5.1 will need to sideload an older APK (Android Package Kit) from a third-party mirror (like APKMirror or Uptodown). This immediately puts the user at a slight security disadvantage, as you aren't running the absolute latest build, and you lose automatic updates. If you see compatibility errors, try navigating to