I decided to fly my phantom 4 when it was 105 degrees outside in Bisbee Arizona, i had it in the trunk and my ipad mini was already hot, so i flew it around and my ipad overheated and turned off mid flight. Luckily the return to home worked like a charm. Next flight i wanted to fly around the open pit mine. When i started it up it said Vision Error. I flew it anyways because i had driven a long time to get this video. I flew it about a mile away and then tried to turn it around to come home and it would not turn toward the sun, it acted like there was an obstacle in it's way. So I had to run to it before the battery died in 100 degree heat. In hindsight i could have tried to fly it back sideways or backwards. i think the sun was making it think there was an obstacle in the way, since it apparently wasnt using GPS. So yah, all my fault. Love my Phantom 4.