The app called Hello matches phone numbers of incoming and outgoing calls to Facebook profiles to show you who you are talking to.

It also blocks calls from commonly blocked numbers and searches for businesses to call, reported.

The feature will only work if the caller has shared his number with Facebook and if you would normally be able to see that information.

For example, if you share your number publicly, people with Hello downloaded will know it is you calling even if they do not have you as a contact.

Currently, Facebook is rolling out Hello for public testing in the US, Brazil and Nigeria.

The app is available as a free download in the Google Play store.