You can find archived versions of these apps on reputable sites like Facebook (Main App) : Older variants supporting Android 4.1+ (API 16) are still available. Specifically, version 212.0.0.28.110 is known to support installation on Android 4.1. Facebook Lite
To install an APK, you must go to your security settings and toggle "Unknown Sources" to allow installations from outside the Play Store. facebook apk android 412 work
The last official version of Facebook that supported Android 4.1.2 was (sometimes cited as versions between 180.x and 190.x). After mid-2019, Facebook’s updates introduced code incompatible with Jelly Bean’s WebView and graphics rendering. You can find archived versions of these apps
