It runs efficiently on devices with less than 1 GB of RAM.
Once downloaded, open your phone's folder or pull down the notification bar. Tap the downloaded .apk file. Tap Install at the bottom of the screen. Once completed, tap Open to launch Facebook. Alternative: Use a Mobile Web Browser Download Facebook For Android 4.1.2 BEST
Only use APKMirror, APKPure, or Uptodown. Avoid random blogs or file-sharing forums. It runs efficiently on devices with less than 1 GB of RAM