iPhone Keeps Randomly Crashing, Rebooting, and Showing Extreme Battery Drain

In your Screen Shot(s), did you notice what it states next to Battery Health? It states - Service.

You have a battery that needs replacement. They symptoms that you mention in your post are in relation to that. Peak demands by your iPhone's processes are no longer supported by the failing battery. Please have the battery replaced. Thanks.

Axel F.

This is not Apple forcing you to buy the iPhone 12, planned obsolescence does not exist with regards to Apple devices.

It’s obvious from the screenshots provided that your battery is in need of a replacement. Poor battery health is one of the most common reasons for sluggish performance and unexpected shutdowns with all smartphones.

Lithium-ion batteries age chemically overtime and as such, their capacity decreases. From time to time your iPhone can shutdown as the battery just isn’t capable of supplying the power needed by the SoC. This is why Apple introduced CPU-throttling back with iOS 10 a few years back.

Get the battery replaced at an Apple Store or authorised service provider so you know you’re getting genuine parts, and reinstated water resistance if your iPhone is equipped with it.

Your iPhone 11 crashing has nothing to do with the release of the iPhone 12.

It’s almost certainly a software bug that should be resolved soon. Hard restart your iPhone and make sure it’s running the latest available software which as of now is iOS 14.4.

Also if you’ve installed anything that isn’t from the App Store recently, I would go ahead and remove it as that could be causing the issue too.

I am not able to explain why your battery was working normally prior to the update on iOS 14.0.1 . Note that your battery still works however the system indicates that it needs to be serviced (replaced) for your iPhone to work normally.

You may try and update your iPhone to iOS version 14.1 and see if that helps. One other option is to have your iPhone examined at the Apple Store or at an Apple Authorized Service Center. They have the proper tools to diagnose the iPhone.

Axel F.

Use the contact support link at the top of this page and arrange for a mail in repair. You didn’t say where you are, but there are 7 Apple stores open within 10 miles of me. You need to schedule an appointment to visit one, but there are a lot of them open.

I wish you would get through your head that is irrelevant. You phone needs a battery. The reason it does is also irrelevant. Although it was probably on the verge of failure and failed coincidentally, or perhaps it was weakening and you didn’t notice.

I have had very similar problems for the last couple months, including a frequent “unable to determine if battery is genuine” message. At the apple store, they said it was likely a problem with the motherboard so no fix.

Yesterday I realized that when I took the SIM out and put it back in, it would go longer without crashing. And when I ran it would crash more than when sitting still. So I had the thought that maybe there is something wrong with the SIM connection. I called my carrier and switched my service to the IMEI of the virtual SIM. I’ve had no physical SIM in the phone for 4 hours and have had 0 crashes, which is by far the longest it’s gone since the problem started.

I am optimistic that i fixed my problem and hopefully that it works for you!

Mistterius,

I am NO expert just an iPhone 11, iOS 14.1 user. My phone has the intermittent issue where I will have my phone charging all night just to show only 10% charged when it had a a higher charge before I connected it to charge. It happened when I woke up yesterday morning.

I have not experienced the serious consequences you have because I have the Apple iPhone 11 SMART battery case on my iPhone. When my battery is at 10% charged in the mornings after charging all night, it has drained the entire SMART battery(which I’ve never been able to drain by just use) and the iPhones battery except for the 10%.

When this happens, I have to remove the battery pack from the phone and charge them independently but the iPhone still shows problems trying to charge. Yesterday I went through all the steps turn off background app refresh, close all .... . I kept watching the battery charging in the upper right corner of the screen and it was flickering between white and barely viable green. I could explain why I did what I did next but who cares, anyhow I turned cellular off(don’t ask why) then just kept pulling power from the phone and plugging it back in. I watched the battery in the corner and after the 4th time the battery in the corner showed green and charging. It charged quickly and is fine again till it happens again.

Now, I am NOT saying that ‘Cellular’ being turned off had ANYTHING AT ALL to do with alleviating the battery issue NOR am I saying that ‘Cellular’ being ON caused or contributed to the issue. SO please DONT feel there need to school me on how utterly ridiculous and ignorant I am because I am NOT even insinuating that ‘Cellular’ being OFF or ON at the time, played any role what so ever in the causation of or the resolution of my battery NOT charging. Just stating the steps, trial and error, I took.

Hi mistterius,

I do NOT agree with those who jump to the problem being a bad battery. Some few cases could very well be due to battery issues BUT the vast majority of these extreme battery drainage issues are NOT due to bad battery. I believe this is a HARDWARE issue but it could just as well be a software issue-possibly tied to the power commands/states. I am confident that a far greater number of people KNOW this is a real issue that replacing the battery will NOT fix.

I'm having this issue on my iPhone SE, as well; battery at or near 100% charge...crashes...reboots at 10% charge. ALWAYS at 10% charge. If it was a battery issue, it wouldn't ALWAYS reboot to that exact battery percentage. I thought it was one particular app causing the crash, but after deleting that app, the problem occurred while using a different app.

Hi all, I didn't read the whole thread but will support the OP with my personal experience. iPhone SE will crash every day, always with screen on, then reboot at 10%. The kicker is I can use the phone for the rest of the day and it stays at 10%. That's not a bad battery - I think it's software not interpreting the data correctly. Thus far it's only a nuisance, knock on wood, for those daily crashes. Other than that fully functional, and it's more than five years old. Good phone.