Facebook Hello for Android is a dialer app which aims to make your Android handset "smarter" and "great at being a phone." It does this by using its immense database of information, and using the caller's Facebook profile to let you see who's calling (even when you don't have certain numbers saved in your phone).
You can also search for places and people on Facebook, and even block unwanted calls. When someone calls you, their latest Facebook profile photo and updated info (including birthdays) shows up on the screen. Additionally, the new dialer app offers free calling and texting through Facebook Messenger.
You can download the app directly on your Android device through the Google Play Store or by using the following link:
It is not known if Facebook plans to offer its Hello dialer for iOS or Windows Phone users.