This is a strong indication that very early versions of Facebook Lite did have broader compatibility. Your best bet is to try to find and install one of these very old "Lite" APKs.
The last major versions of Facebook that supported Android 2.1 were generally within the era. Step-by-Step Installation Guide download facebook app for android 2.1
This public link is valid for 7 days and shares a thread, including any personal information you added. This link or copies made by others cannot be deleted. If you share with third parties, their policies apply. Can’t copy the link right now. Try again later. This is a strong indication that very early