He has committed a felony by interfering with your right to electronic communication by taking your phone. He has interfered with your right of freedom of movement and essentially held you captive. Those should be or should have been reported to the police. If the children are his, and you are not married - even if he signed the Affidavit of Parentage and/or the Birth Certificate - he does not have any legal custody rights unless and until a court gives him those rights. He cannot legally stop you from leaving and taking the children. If he is not the father, then he has no custody rights whatsoever and cannot legally stop you from taking the children.
Answered on Oct 25th, 2016 at 6:31 PM