The best way to protect yourself against spam calls is to use a phone number that you have purchased or that you do not share with anyone. The number will be placed on your contact list and you will be able to see who is calling you.

With this app, you can identify all incoming calls in your phone. This app not only shows the name and number of the person calling you, but it also shows the region and the country where the person is calling from. This is an app that you can use even if you are in another country.