While downloading APK files can be a convenient way to install apps, there are some risks involved:
Search for Facebook Version 281.0.0.36.124 or earlier, which was one of the last stable releases to support Android 4.1+ .
: Use your device's browser to download the file from a reputable site like APKMirror.
Facebook’s security algorithms are aggressive regarding "suspicious activity." Logging in from a device running a 10-year-old operating system using an outdated app build can trigger security flags. This may result in your account being temporarily locked or permanently banned for "suspicious login activity."