I received my Mavic 3 days ago and I have never been able to get the image from my controller to my iphone 6s. All I get is a black screen. I have tried an ipad, another iphone 6s. I downloaded the DJI assistant and updated the firmware on the Mavic. I'm thinking I may have a bad camera. I called DJI support and they told me to update the firmware (which I had already done). Any more ideas I can try? I'm so aggravated!