Could be many things. Different model, who knows. I have a P3P and am using it with an iPhone 6 Plus and iPad mini. Both devices had no issues until the universal upgrade. I thought the 6 Plus might have had the issues due to the apps I use but it also affected the iPad which is exclusively for the P3P. Both devices get red hot while using. DJI Support doesn't know so I'm not even going to hazard a guess. Fact is, worked great before, not after. There are many, many users experiencing the same thing. If you browse this Forum, DJI forum and many more out there , it seems to be cross platform but always related to the previous DJI Go app. I don't know if the issues cross over to the DJI Go 4 app users but of course my P3P is not compatible with Go 4.