So I decided to delete the GO4 app and download again.  That seemed to do the trick.

Still not sure why my iPhone7+ still heats up when using it though.

Now I am totally confused and bummed that I bought the Phantom Pro4 V2. I just got it and am trying to find a device that works well with it w/o video lag or over heating. I was about to buy a new Ipad Mini 4 but now I find out they keep charging from the remote and overheat which undoubtedly causes electrical problems over the long run plus it is an additional $300 minimum. I wish I had just bought the Pro Plus or something that had the problems worked out. That seems to always be a problem with new technology - they market it before it is ready and the consumer suffers. I tried several Android devices and none of them worked w/o objectionable lag. Now, what to do? Can these be returned?