I agree with kas. I did a phone interview ~week ago. Although you can have cheat sheets with you and all...you don't feel much in control as you can't read body language (which would guide you a lot), you can't connect and if accents play poker on you, you can't read lips. Worse if you are in Africa like me, connectivity might me an issue. They gave the slot to someone they'd seen face-to-face and none of us who'd been 'seen' on phone!