Hiya all. I'm six flights in with my phantom 4 using dji go. I usually use an iPad 4 and suffer from intermittent loss of video feed. My 4th flight found me without the extender for my iPad and I was forced to use my iPhone 5s instead. Two batteries worth later and I hadn't lost video feed once. Next time I was back to the iPad and the feed continued to stutter like before. Any thoughts as to what's going on. Many thanks in advance.