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IPhone shut down mid flight!

Discussion in 'Standard/4k Discussion' started by Elsopix, Oct 12, 2016.

  1. Elsopix

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    Hello all,
    I am
    Still running my test flights and easing my way into quad flying. That said I had my first experientoday that's was less than ideal. I started flying and my iPhone 6 said "20% battery switch to low power mode?" I chose yes and didn't panic as only had about 10 mins fly time left. However 30 secs later the phone shut down as if it was out of power. It would not restart. Luckily ElsoPix1 was still in sight so I brought it home safely. However there is clearly a weak link in my set up here. Has any one else had this? Anyone know where I'm going wrong?

    Ps when I put the phone on charge it lit up and said 43% power!


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  2. Cobs

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    My advice would be to make sure everything your gonna use is charged and not be so dependent on apps/devices and expect things to go wrong at times ... and be ready for them ... which you were ... and you managed to fly it back, theres always RTH for those kinda moments where youve lost visual on it. Seems like a normal (Pilot Error) event to me. :)
     
    #2 Cobs, Oct 12, 2016
    Last edited: Oct 12, 2016
  3. With The Birds

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    Make sure the phone is juiced up before flying and all should be good. It's working hard to decode your video downlink so this isn't surprising.
     
  4. Elsopix

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    It was on about 90% but it's getting on a bit now. Just one of those things I will get used to with more experience.


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  5. MacCool

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    I've had an issue lately with my iPhone 6 iOS 10.0.02 shutting down mid-mission. It's happened a few time using latest version of Litchi. I never fly with DJI GO so I don't know if it's a problem with that app or not. Fortunately, with Litchi, the mission is uploaded to the drone at takeoff, so the iPhone going down didn't affect the flight at all No RTH needed...the Phantom 4 just finished its mission and came back to hover at the last waypoint and I landed it visually.

    The phone was fully charged, I got no warnings, just looked down and saw the phone was dead. After landing, I turned it back on just fine. I always make sure there are not other apps running in the background. I also switched up cables and mad sure that i was using an Apple-brand lightning cable.

    I'm not sure what's causing it. I'm wondering if it's causing the phone to overheat.
     
  6. Elsopix

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    Sounds just like my experience. I'm using DJI GO could well be overheating. May be an issue to watch


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  7. toegema

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    My experience is also that even if my iPhone is fully charged, especially in cold weather, the charge drops extremely fast when flying with DJI GO /litchi.
    Then when the phone can't deliver the charge anymore it shuts off. When I put in the charger or force restart it by holding home button and power button, the battery percent is still almost as high as it was before flying.


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  8. Techcop50

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    Sounds like a bad battery on the iPhone, to me. Replacing it (the battery) would be a good starting point.
     
  9. foxtrot101

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    Had that happen to me once too... only difference was that I was about 200' off the pacific coast, and about 200' up in super heavy fog... I couldn't see it or hear it and that's the moment that I did not realize that you had to long press return to home for it to activate haha... you could say I panicked, I did. Thanks to the help of my son, he finally spotted it, and I immediately brought it home and landed it... I learned a lot that day ;)

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  10. Elsopix

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    Yeah it's a learning curve! I think the over heating theory may be right!


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  11. CrispyClaret

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    I agree, my experience with iphones is that when the battery has had enough its indicated charge level is all over the shop. Not an expensive fix for older iphones, dunno about newer ones.
     
  12. skyacramer

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    Hey take your phone to the closet Apple Store, or maybe you're carrier, the do free diagnostic


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  13. skyacramer

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    When my phone said 100% it was really 30%


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  14. dg8882

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    Where are you located? Is it getting cold where you are flying?
    It's not a secret that the go app is resource intensive and will drain your device battery rather quickly. normally my iPhone will drain from 80% down to 30% after exhausting my two batteries.
    However a problem I have noticed flying last winter and I am seeing it happen again now that temperatures are dropping to the 50s and 40s when i am flying.
    I start at a fairly decent charge on my phone (70%-80%) and usually in the first half of my second flight, i get 20% low power warnings starting. Usually it wouldn't be a concern but within a minute or two my phone will shut off, sometimes giving me the 10% warning, sometimes not. I RTH and land manually after this happens and go back to my car to plug my phone in. It shoots right back up to anywhere between 20%-50% after i plug it in.
    I believe because the output of lipo batteries is lowered with lower temperatures, going from my warm car to have it preform an intensive task with the cold weather and windchill on it, the phone gets some false readings on the battery. An easy way to counter this if you have a P3S is to just pick up a power bank. I got a 10000 mah one for only $12 that can charge my phone a few times without needing a recharge itself.
    If you aren't flying in any cold temperatures then I would be looking at a problem with your phone battery, especially if you have had it for a year or more. iPhones are a bit tough since apple tries to make them as tamper-proof as possible but it is still possible to change the battery yourself if you have some tech knowledge. If not, apple will do it for a nice and high price or some phone repair place for probably a little less.
     
  15. Elsopix

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    Sounds like my symptoms exactly. I have been meaning to get a battery pack for a while. I think that is a good idea. I too have two batteries and my failure happened in the middle of the second flight.


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  16. firestars

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    The latest iOS is causing the phones to shut down at over 20% battery. My 6s and my work 7 do exactly the same.


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    eneilsen, Elsopix and CClifton like this.
  17. CClifton

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    I had the same issue and reported it to DJI. They told me to check the software versions. I'm current on those but the issue keeps happening. I'm beginning to feel like it's an issue with iOS 10.[​IMG][​IMG]


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