How to dowmload the official facebook application to your phone

Facebook has launched an official app that supports a number of mobile phones.
This app comes with top facebook's features
such as status update, profile, newsfeed, photo upload,

quick search and lots more. This new app can even search through
your contact list to help you find friends so if you dont have this facebook
app on your phone, you are missing the fast and easy to use facebook features.