Facebook mobile app is a very good app. The concept of Facebook mobile app is very good. It is conceptual to the people to much. The design of facebook app has created is effective and the layout has been prepared very strong . The layout of this app is very attracted. The feature or function of facebook app is very good and are easily understood. All function and features make good mantain. Its usefulness is nowadays is pretty much went up. The friendship and love grows in the people through this app.