Can we use one of the Font Awesome icons as our website’s favicon? Or, how to create favicons with Font Awesome? 
There is such a possibility?
It is possible that we can use direct awesome font character as favicon without converting into image?

Needs to be an actual image file, so you can't use a direct font-awesome icon.

But just use this to generate one yourself:

http://paulferrett.com/fontawesome-favicon/

excellent, Yet it's not letting me to upload on my phone