This is a know issue with the battery. Pop into an Apple store and they will replace the battery for you. Initially it was thought the issue was only on the 6s but there have been numerous reports about the 6, 6+ and 6s+ having the same issue. This was also all over the tech websites. Insist they swap the battery under warranty even if your serial number does not fall under the supposedly 'affected' units, they will do it.
I keep having this issue with my Nexus 6P. It's getting to the point where I'm getting angry with DJI. You shouldn't pay $1000 for a drone to have an app that crashes 7 times every flight.
Have this issue with both apps. Tried resetting, uninstalling. Gonna try factory reset on my phone but need to back stuff up before I do.
I'm afraid to use any of the tracking modes, or fly far away out of fear of the app crashing
I would suggest you try another approved device and see if it persist. Also, keep in mind, you do not need the app to fly, as long as you can see it (LOS) you can bring it back no problem.
You can use the controller if it's out of LOS too, just yaw whilst flying forward until the distance decreases on the display, hopefully obstacle avoidance will keep you out of trouble... DJI Go 4 also crashes on my (2014 version) Nexus 6P, and rather more than Litchi does.. I'm sure they'll get there in the end. Clearing the cache may help with software crashes. I'd thought 'pure' Android would work best, but that does not seem to be the case.
Maybe uninstall and reinstall, strange it happens to both.. Maybe clear the cache and remove any apps running in the background.
