After receiving my phantom 2 vision + I've been losing wifi and preview at around 250-300 meters. This is in an open field in a rural area where there would be very little interference. I have the antennae pointed up and the range extender (RE700) with the flat side towards the RX. I am using the lowest quality of preview. At around 200 meters (often less) the video begins to lag. The range extender appears to be binding and functioning correctly. I am using a Galaxy S5 with the DJI vision app. I have set the galaxy to not search for other Wifi sources. Some days I can go further but I have yet to make it to the 1000 mark as advertised. Other times I have lost wifi signal at less than 100 meters. Based on what I have read this is not normal. I searched the forums, but one of the solutions that worked was to upgrade the RE500 to RE700 (which I have). I plan on eventually getting some sort of antenna modification, but I would first like to see what I have purchased working to its fullest capacity. Any suggestions? I suppose I will try this on a different mobile device and see if that helps.