I recently purchased a Samsung Galaxy S9+ and it's a real joy to view the feed on the bigger ultra-hires screen. But something weird is happening. I'm connected to a remote controller...so I never lose control of the spark, but for some reason (usually when I'm descending) the DJI Go 4 app just goes away. It's still running, but I'm back at the home screen. If I wait a few seconds, I can go right back into it...but it keeps recording and the spark is still under my control. I was at the highest graphics setting, so I thought maybe I needed to turn that down to medium settings. But it still happened... only once though...whereas at the higher res it happened multiple times... I haven't tried the lowest graphics setting yet. Has anyone else had this happen? If so, any ideas/suggestions on what to do? I'm happy that it's still working and recording, but it's really frustrating...and awkward to have to re-open it... I had a Galaxy S6 before and this never happened.