Hello is an Facebook powered app. This is basically a dialer app which after downloading and installing syncs your contacts and then you will be able call your Facebook friends directly from your contact list. Another feature of this application is the detail of the unknown caller. When some one who is calling you even he is not in your contact list, this application will provide the information about that caller before you answer it. This app will save contact pictures of your contacts so you can easily will able to recognize a person.