I thought I would post my experience today - it might help others. I went to fly and it was cold. I put my phone in my pocket and had the tablet on the TX. Got to my spot and turned on the TX and the the Phantom..............nothing would connect. The Go app wouldn't connect, WiFi wouldn't connect, nothing. It said I had a week TX signal etc........turn things off and on several times including my tablet. Got back in the car after several attempt very frustrated. Then it hit me. I had the wifi turned on for my phone (I have used my phone to fly a few times). The TX and Phantom were hooking up to my phone in my pocket before hooking up to my tablet. Shut off my phone wifi and I was back in business. Lesson learned.