Facebook is like many other social networking sites which helps many people in communication and many use it to share there daily life on facebook. It helps bringing people together.
Facebook mobile app like every other application ii is a application which is easily availabe on playstore you just need to search facebook in the search box and than install after intalling the application you will be asked to login with you email id and password and in case if you are a new user to facebook you need to create a new account after all those things are done you are good to go with your facebook id
I hope my review on facebook app will help you
Thank you