How to Download Facebook Video From Android Devices

1)Download Tubemate here
2)Install it in your device
3)go to facebook via Mobile's Internet browser
4)click play button on the video you want to download
5)and this (complete action using) will appear,if NOT you should clear default in Settings>Applications>Manage Applications

6)Then, Choose Tubemate
7)it will automatically open Tubemate and ask you to download
8)tap download and rename the video if you want to.
9)Done and enjoy! :)

Alternatively, you should try here too...