How to unmask blocked calls with TrapCall (Video) Kevin May 20, 2019 18:18 Updated Follow Learn how to reveal who is behind blocked calls on Android and iPhone devices. Related articles What is Live Caller ID? How do I cancel my subscription? Why am I receiving an error message when trying to activate? How can I enable Spam Call Blocking on my iPhone? What is Privacy Lock? Comments 0 comments Please sign in to leave a comment.