Downloading Facebook for Windows Mobile 6.1 wasn't done through a polished "Store." You didn't have a unified login or cloud backups. You did it the old-fashioned way: you opened Internet Explorer Mobile, navigated to the official Facebook mobile site (or a third-party archive like GetJar or Handango), and prayed the connection didn't drop.
In the past, Facebook offered a dedicated app for Windows Mobile 6.x devices, but it was discontinued as Facebook’s features evolved and Microsoft moved to newer platforms like Windows Phone. Trying to download such an old app today from third-party websites would be risky, as those files are unlikely to be maintained, may contain security vulnerabilities, or could potentially harm your device. download facebook for windows mobile version 6.1
Finding an official, working app for Windows Mobile 6.1 is difficult today because the platform is no longer supported by Microsoft or Meta. Most "download" links found online for this specific version are legacy files or third-party archives. Windows Blog How to Access Facebook on Windows Mobile 6.1 Downloading Facebook for Windows Mobile 6