My company has me taking some photos of our facility using my Phantom and taking photos directly overhead of a process Chemical Plant looking straight down. To get some of the photos and the area needed, I had to go a little higher than I have been getting for most process units. This time, the process unit is quite large, so I flew about 150 foot out and just under 1,000 foot in elevation to get the view needed. I got the photo and after taking the photo, I was going to go just a tad higher when I lost signal with camera and then just afterwards, I lost signal on the transmitter and it came up with the message Returning Home. That Return Home message went away soon afterwards and gave me a warning that signal was lost. With the sun right in the way, I could not see my Vision and knew it should return back home, but without it saying Return Home on the screen and no view with the camera any longer, I just wasn't sure. For what seemed like forever looking for the Phantom.........looking.........I finally found sight of the Phantom directly overhead and dropping as it should, however, although it kept dropping slowly as it should, I regained composure, however, I never got the wifi with the camera again, and it never picked up what the camera should see on my iPad mini. I finally took control from the Return Home by flipping the switch to gain control at about 50 foot and let hover but still no camera view. I stopped to hover and I had to get out of the program, go to Settings and look and turned off the Wifi and back on and it finally connected with Wifi once again and went to iPad mini and got camera again in the App and then flew back home with camera finally working. Not sure why it didn't pick up the camera wifi as it got into range, but never did until I went to Settings and selected the wifi once again and no other wifi was in the area to choose from. Is this normal for others? This is my first time losing control and still thought it should connect as it got back into range of the wifi. I have had a drop of signal plenty of times in the past for a few seconds, but not for minutes as it did this time and never recover wifi signal for camera.