iPhone 7 battery issue - shuts off at 40-50%

Discussion in 'iPhone' started by jarred125, Jan 5, 2017.

?

Are you experiencing battery "failures" on your IP7?

  1. Yes

    1 vote(s)
    7.7%
  2. No

    12 vote(s)
    92.3%
  1. jarred125 macrumors 6502a

    Joined:
    Nov 8, 2011
    #1
    So I wanted to see if anyone else has seen this. My 7 shut off twice tonight while doing an Instagram live stream, I was out wandering the woods looking for some photo opportunities with my camera (not iPhone camera..) when out of nowhere the phone generates a VERY quick message on screen which I couldn't manage to read and then it goes dark. Weather outside is about 20F so it shouldn't be overheating. The phone then takes at least 3-4 minutes to be able to power on again, trying before that time results in the "you need to charge me" indicator on the screen.

    Apple support wants me to restore, which is a miserable pain because I have a number of two factor apps setup and nothing ever restores just right anymore.

    So, anyone seeing this on their 7?
     
  2. C DM macrumors Westmere

    Joined:
    Oct 17, 2011
    #2
    Sounds like it might have been too cold for it as that can have a similar effect as overheating (although certainly not really as damaging as overheating can be).
     
  3. T5BRICK macrumors 604

    T5BRICK

    Joined:
    Aug 3, 2006
    Location:
    Oregon
    #3
    20F is well below the minimum operating temp.

    Cold can reduce battery life in just about any kind of battery.
     
  4. Retired Cat macrumors 65816

    Joined:
    Jun 12, 2013
    #4
    More specifically, cold inhibits the chemical reaction in the battery that allows it to maintain high enough voltage to the components.

    Warm up the phone and the battery will "wake up".
     
  5. jarred125 thread starter macrumors 6502a

    Joined:
    Nov 8, 2011
    #5
    This seems to be the issue then. I specifically told the support agent the temperature so I would have thought they would have informed me. Oh well you live and learn, I never had this problem with any other phone to my knowledge.
     
  6. Newtons Apple macrumors P6

    Newtons Apple

    Joined:
    Mar 12, 2014
    Location:
    Jacksonville, Florida
    #6
    All you need to do is carry you phone against your body to keep it warm. I have used my much cooler than that and as long as you use your body temp to keep it warm you should not have a problem.

    Support agents come in all flavors.
     
  7. Relentless Power macrumors P6

    Relentless Power

    Joined:
    Jul 12, 2016
    #7
    As much of a inconvenience as it is with iPhone shutting off with abnormal temperatures, at least it's doing you a favor, from preventing any further damage. It's nothing more than a failsafe design.
     

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