1. Domestoboto92x's Avatar
    The Apple support site is filling up with complaints about this. More here: https://discussions.apple.com/thread...art=0&tstart=0

    My 32GB 5S is now on 9.3.1, the 'Install now' was hit by my mother by accident. Has anyone had a negative experience like this? Does your 5S heat up and battery life takes a dive? Because I'm freaking out if it would...
    04-05-2016 11:24 AM
  2. Just_Me_D's Avatar
    I don't have an iPhone 5S, but my youngest son does, however, he has not yet experienced heating issues while running iOS 9.3.1.
    04-05-2016 07:12 PM
  3. Couver81's Avatar
    I updated my 5s this past weekend. It was a little warm during the update but soon after it was fine. It has been cool ever since knock on wood. I have even noticed a slight bump in battery life.

    Have you tried doing a restart?
    04-05-2016 09:08 PM
  4. MaxSmarties's Avatar
    My wife's iPhone 5S runs great on iOS 9.3.1
    An initial hotness is normal after the iOS installation (th system is indexing), but it should stop after a few minutes (or a few hours at best).
    If your phone constantly is warm, there's a stuck process or app in background. Try to force out any apps and restart the iPhone.
    If that doesn't work, try to restore the phone as new and keep it under observation for a few hours without any third party app installed.
    04-06-2016 12:08 AM
  5. Domestoboto92x's Avatar
    Hey, thank you all for responding. Right now, my 5S is running like it used to on 9.2.1 (I updated to 9.3 then the .1.) The heating only happens in truly intensive use, normal Tumblr activity doesn't hear it up too much...
    04-06-2016 12:37 AM
  6. pr1nce's Avatar
    My 5s is running great on iOS 9.3.1. No heating issues.
    04-10-2016 12:11 PM

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