iPhone keeps randomly turning off

This is probably the best answer. I took the sim out before seeing this post, but had to take the phone (13 mini) to the Apple Store since I was at a point where it wouldn’t charge, and it wouldn’t even get to the unlock screen before shutting down again. I noticed that the SIM card was actually the problem and removing it earlier when I still had the ability to reset while it was attempting to charge would have most likely fixed the phone and prevented it from getting damaged more to the point where it doesn’t finish booting at all. When I took it to Apple they said it was a rear harness issue since the phone wouldn’t charge at all it wasn’t a battery issue. They obviously recommended I replace the entire part $299 or buy a replacement 13 mini for $400. Apple has seriously gone down hill and they’ve become more like an auto dealership that doesn’t fix the problem or repair decides, but just recommends the most expensive and profitable option (replace the majority of the components, or buy a new phone). I’m sure Apple is aware that the SIM cards are causing the logic board/rear assembly to become unusable, but knowing Apple it’s either a known planned obsolescence method, or they are award of it and prefer to let the phones die from their software update/sim malfunction to make people buy new phones and hardware for repair.

I can confirm that the SIM card was the main issue, since after I removed the sim and tried to use a back up work phone (iPhone 8) until I got a replacement, the phone did the exact same thing as the 13 mini started to break which was go from around 30% battery down to 1% and say it was charging initially but unable to go above 1%, then eventually not say charging at all and continue rebooting. Once I took out the SIM card after noticing that the exact same thing was happening to my iPhone 8, the battery went right back to its previous charge of 30% without it having charged back up. It was then able to charge normally and stopped power cycling. Something with the iOS update causes the sim to overload the logic boards ability to charge the battery, and that inability to charge will cause the phone to be unable to have enough battery to finish booting. Apple knows this is the issue since another used mentioned that an Apple Genius had recommended removing the sim and resetting to fix the problem, but they keep these solutions from the rest of the company/sales people/technicians or tell their employees not to mention it to their customers so the phone will become unusable/unrepairable with this method and they can try to profit from replacing huge components or forcing users to buy a new phone which is all they care about.

This fix worked!

I also had a problem with my iPhone 13 mini, never happened until upgrading to iOS 17.5, now my phone just randomly turns off and can't turn it back on. Sometimes it works if I plug in with a real Apple thunderbolt cable into a Mac. But also found like @jamesonnorahgamble that taking out the SIM card and pluggin in the phone lets me power up the phone. I didn't see any issues with charging, though.

I have been having the same problem and my phone has been absolutely useless. Been in chat with Apple since 15:45 EST to no avail. Finally I was able to update to ios17.5 and so far so good. This is my absolute last Apple product. I'm done.

The same thing is happening to my phone aswell, I updated my phone to iOS 17.4.1 and after this update, my phone will just switch off every 10 minutes or so while I’m using it. Reading the comments I genuinely think this is the new update that has this bug that is causing our phones to switch off. I hope apple fixes this issue soon because it actually disrupts certain things in peoples lives.

My phone just this day occurred exactly what this post all about. iPhone 13 just keep shutting down if not being used. I have no problem if I’m using it. But the moment you put it idle it just turns off on its own. I tried factory reset thru iTunes and phone setting but none helps.

KimH44 wrote: "I’m having the same issue with my 11pro I just updated to ios 17 and now it’s not turning on at all :("

Kim ~ The long process of applying an iOS update to an old iPhone with a weak battery can be the proverbial "straw that broke the camel's back." So...

Does your iPhone 11 Pro still have its original battery?

And what's the Maximum Capacity % here?...

Settings > Battery > Battery Health & Charging

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ShineOnBee wrote:

... there has to be something in settings where you can be notified or alerted before they do an update. ...

Uh, there is:

Update iPhone manually

At any time, you can check for and install software updates.

Go to Settings  > General > Software Update.

The screen shows the currently installed version of iOS and whether an update is available.

To turn off automatic updates, go to Settings > General > Software Update > Automatic Updates.

Update iOS on iPhone - Apple Support (CA)

Also...

Update iPhone automatically

If you didn’t turn on automatic updates when you first set up your iPhone, do the following:

1. Go to Settings  > General > Software Update > Automatic Updates.

2. Turn on iOS Updates below Automatically Install and Automatically Download.

When an update is available, iPhone downloads and installs the update overnight while charging and connected to Wi-Fi. You’re notified before an update is installed.

You can have it automatically download but not install it. It's true for iOS 15.8.3 at any rate. The two switches for "Download iOS Updates" and "Install iOS Updates" only appear after you turn on "Automatic Updates"

Either of those methods would give you an opportunity to back it up before an update is installed.

What I don't know is if restoring an iPhone from, say, a Mac backup will also revert it to the original (backed-up) version of iOS.

John Rose6 wrote:

What I don't know is if restoring an iPhone from, say, a Mac backup will also revert it to the original (backed-up) version of iOS.

TLDR ... Apparently it does not downgrade to the earlier version that was backed up. It only saves settings, files, and apps.

It's not like Time Machine for macOS.

I have the exact same problem! Apple SERIOUSLY needs to fix this as it’s affecting my life as a student. I need it mainly for school and it randomly shuts off for hours and hours then suddenly turns back on. I wish I never updated it to IOS 17! I’ve had so many problems ever since the update I wish I could revert to iOS 16

Hi everyone, this is my first time on here not very tech savvy. I noticed after giving iOS permission to check out Google their 17 point something update, or another a few minutes later “”””” my phone started shutting down. Luckily, I happen to notice and got it back up.. there has to be something in settings where you can be notified or alerted before they do an update. As a matter fact, I just asked Siri if he could notify me before they go to shut down my phone and he said no problem he would add it to the alerts. I’m not anywhere near Tex as most of you as you’re probably my children’s and grandchildren’s age so get into settings and see if there’s something there I know you can find something your are the smartest generation if I may proudly say so?👍🤭

Hello everyone I am also face same problem in 15 pro max . It’s suddenly off and it’s on in 3/5 seconds automatically. Last few days it’s happened with me . What’s is solution this ? I buy it 1 week .

The same thing is happening to me except I can turn it back on but whenever i go to continue using my phone it shuts back off again. This only started happening after I updated my iphone 13 to Ios 17.3. What is happening and is there anyway I can fix it by myself before I make an appointment to bring it to Apple?

I have an iPhone 14 Pro, and did the 17.4 update last night. Now the phone will randomly shut down. I can do the volume up/down --> power button hold restart. But it invariably just ends up shutting down again when the phone autolocks. Can someone at Apple please guide on how to fix this?

Same thing here, iPhone 14 Plus keeps shutting down many times in a day for 2-3 days already. Since iOS 17.4.1 I got some glitch, like the the clickable stuff on a web page does not respond at all when clicking on it. Sometimes I was not able to scroll down a page in safari, Apple News, etc.

those glitch happened in the past weeks.

Now it keeps randomly rebooting, more when Facebook or messenger are opened and if I look a video ou listen to a podcast, it occurs more.

please apple fix that asap.

thanks!