Most international organizations have lost contact with their teams in the north but the United Nations estimates that there could be as many as 300,000 IDPs
![Mobile phones critical to refugees [Getty]](/sites/default/files/styles/image_156x88/public/media/images/B7B8552D-746C-4327-860F-4195A1A7B047.jpg?h=d1cb525d&itok=gU4Kpbne "Mobile phones critical to refugees [Getty]")
