To smoothly download Facebook video to Android then you need to start by downloading the Facebook app or website. From the app, click to share and tap to copy link. From the website, copy link in the URL bar. Here open the fbdown.net in browser that will support downloading. Here, paste the link where it wants and then tap to download. From the next page, tap and hold the quality whether normal or HD. Click to download link in Chrome and then save the video. Lastly, the video will be saved to the downloaded folder and then check out for the location.
To see this working, head to your live site.