This is a problem I've been having for awhile, but it was particularly intrusive this morning. I'm wondering if you've seen this kind of issue before....
I went out this morning for a couple of sunrise missions on one of my commercial ventures. It was a little chilly...about 38 degrees F. My iPhone 6s running iOS 10.0.02 had 51% battery. Good signal. Wifi and bluetooth off, all other apps closed. Litchi version 1.12.4 (latest). I've flown this mission several times before. After the latest Litchi and iOS update...that's when the phone started crashing mid-mission. The phone works perfectly with all other apps, including DJI GO. This Phantom 4 has the most recent drone and transmitter firmware and has never given me any trouble. Flight battery was fully charged, transmitter battery was about 55% charged.
So, this morning, everything starts up normally. Loaded the mission, started the mission...all went well until, again, part way through the mission the phone just shut down. I didn't do anything, just let the drone finish the mission, which it did, no problem. After landing, I restarted the phone, found that Litchi had crashed and apparently shut down the phone at the same time. No warnings, no dialogues. So, I restarted Litchi, had to re-load the same mission, ran the mission again. Same result...Litchi crashed and took the phone with it, only sooner into this mission this time.
Interestingly, while the drone was still flying, on the third flight after the phone crashed again, I restarted the iPhone and it flashed up the dead battery icon. I hit the ON button on the phone again and it restarted normally, but after it booted up, the battery level read 48%.
So, I wonder if Litchi isn't somehow screwing with the iPhone's interpretation of its battery level, making the phone think the battery is dead and shutting it down. I'm going to try charging the phone to 100% and see if it still crashes, and if so, how far into the mission.
Any ideas?
Howard McCollister
Sent from iPad