How to unmask blocked calls with TrapCall (Video) Kevin November 19, 2020 00:48 Updated Follow Learn how to reveal who is behind blocked calls on Android and iPhone devices. Related articles How do I cancel my subscription? What is Live Caller ID? Why am I receiving an error message when trying to activate? How can I enable Spam Call Blocking on my iPhone? How do I sign up for TrapCall? Comments 0 comments Please sign in to leave a comment.