Let's block those annoying spam or unknown calls on your Android phone in this quick and easy guide.

Android allows you to block any unknown callers, basically, any number that's not already in your contact list will be blocked. If this is turned on, it won't notify you when they text or call and you won't even get a voicemail if they leave one. You can also just block certain specific numbers if you know they are spam numbers. This works for any Android phone like Samsung or Motorola.

I hope this video helped solve your problem. App still not working? If so, drop your question in a comment below!