The Facebook APK on Android 5.1 Lollipop is . While installation remains possible, users face:
Since you aren't using the Play Store, you must allow installation from other sources: apk facebook android 5.1
Instead of fighting an obsolete app, consider these options: The Facebook APK on Android 5
If you are still using a beloved device running Android 5.1—such as the Samsung Galaxy S5, Nexus 5, or Moto G (1st gen)—you have likely encountered the frustrating message: “Your device isn't compatible with this version.” apk facebook android 5.1