Before downloading and installing Facebook APK, ensure your Android device meets the minimum system requirements:

is the most viable option. It was designed specifically for low-end hardware and older operating systems like yours. Performance

You can transfer the file via SD card or USB if your phone’s browser is struggling. Choosing the Right Version: Facebook vs. Facebook Lite

Facebook Lite is the most reliable option for Android 4.1.2 because it was designed specifically for low-end hardware and older software.