is specifically designed for older devices and remains compatible with Android 4.4. It is a lighter version of the app that uses less data and storage while maintaining core social features. Availability : Recent versions like 475.0.0.14.104 458.0.0.6.116 officially list Android 4.4 (KitKat) as the minimum requirement. Where to Download

If you need the full-fat Facebook experience (including Marketplace and full video autoplay), follow these steps:

Facebook APK for Android 4.4.4: Download and Installation Guide