Installing Facebook Messenger on Android 4.4.4 KitKat requires using older versions of the app, as modern Messenger versions (9.0+) are not supported
Enable Unknown Sources on Android 4.4
To install Facebook Messenger on an Android 4.4.4 (KitKat) device, you must use an older version of the app, as modern releases from Google Play Store typically require Android 5.0, 7.0, or even 9.0 and higher. Compatible APK Versions facebook messenger apk for android 444 install
Download the APK: Use your mobile browser to find the specific "Android 4.4+" variant for your device's architecture (usually armeabi-v7a for older phones). Installing Facebook Messenger on Android 4