This started yesterday morning, and crashes about every 20 min or so of use, it was fine all night. And when it crashes, I get this red spike in battery performance.

What’s going on and how do I fix it, phone is out if AppleCare and I don't know if it'll make it two more weeks for the new phone.

enter image description here

  • Interesting! Can I ask what version of iOS you're running - both the version and build number. You can get this by looking at the Software Version label at Settings > General > About. If only a version number is visible, just tap on it to also get the build version (it'll appear in brackets). – Monomeeth Sep 7 '19 at 22:32
  • Software version is 12.4.1 (16G102). It was doing it before a software update so I updated hoping it would solve it, but it did not – Chris James Champeau Sep 7 '19 at 22:36
  • 1
    Thanks. Just this past week I've become aware of two other users experiencing the same issue, although not as regularly as every 20 mins - but that may depend on usage. Both have batteries in the 90% + health range that still support normal peak performance. One has the exact same version and build, but I won't know about the other for another 5 hrs, so am keen to see what version they're running. This is purely speculative, but I am wondering if there is some bug in that version that's affecting some users (although that's a pretty brave statement on the back of three devices). – Monomeeth Sep 7 '19 at 22:43
  • 20 mins was the closest interval, I think I would say its once maybe every hour to two hours on average, it sort of depends on usage. – Chris James Champeau Sep 7 '19 at 22:59
  • 1
    @ankiiiiiiii battery health is 89% and peak performance – Chris James Champeau Sep 10 '19 at 2:42

First off, I would try force quitting all of your open apps and seeing if that solves the issue. It looks like 'HQ' in your list above is using quite a bit of battery.

If that fails, I would try a force restart of your iPhone. Note this is different than a standard power on/off.

Also, please confirm there is sufficient hard drive space on your iPhone. If you're low on space, really bizarre issues like random crashes can happen. I would suggest having a minimum of 10-15 GB.

If neither of the above suggestions apply, to rule out any hardware issue, I would still suggest taking your phone to the Genius Bar at Apple. You can make a reservation even if you're out of warranty.

They will run a battery of tests on your phone (for free) to let you know what may be wrong with it, and if it is hardware related, will give you pricing on a repair. Apple unfortunately does not expose these hardware tests to the general public.

They also have some limited leeway to go above and beyond for Apple customers depending on the issue you're having with your product, so keep that in mind.

  • I ended up just ordering the new iphone, it appears to be logic board issue based on a quick diagnostic that was done at a local apple certified repair shop, appointments at the genius bar are insane here for some reason, next available at my apple store is tuesday and I didn't feel like waiting that long. Either way it works fine if plugged in, just not if it's high usage on the battery. – Chris James Champeau Sep 16 '19 at 16:33

This sounds like a logic board issue. Have you ever seen your phone flash a solid color prior to the shutdowns? When it crashes/restarts, does it boot to the Apple Logo screen, or does it take you back to the screen you were on prior to the shutdown?

There is a specific log within Privacy > Analytics > Analytics Data that would indicate the logic board failure. Send a screen shot of this list & I can give you a better idea.

You must log in to answer this question.

Not the answer you're looking for? Browse other questions tagged .