iPhone 5 shuts down with plenty of battery life left

My wife has the same problem as everyone here, where her iPhone shuts down at random, doesn't really matter what the battery percentage currently is. I thought it also was the battery, but when she got a new case for her iPhone 4, she gave me her old iFrogz case.

I never use a phone case because I just like it that way and I very rarely drop things, but when I put her case on my iPhone 4s the same thing happened to my phone in just hours from putting it on. I decided to keep it on for a few more days, getting the phone to work by connecting it to the power cable or my computer when it would randomly shut down. It would shut down at random within hours sometimes days, and my wife's phone would still do the same.

I decided to take my phone case off, and to this day over a month has passed with no shut down and it never shut down before the case was put on, but my wife likes her phone case and she is willing to deal with the random shut downs.

Get rid of those cases or find one that won't randomly shut the iPhone down. Just saying… somethings in the case.

iPhone 6 has exactly same issues. In winter time when temperature goes below 5 C it turns off at 70%. Try to call emergency. After a minute it will shut itself down. iPhone 4 battery life was way better in cold temperatures.

Today my iPhone 6 shut down itself at +5 C and 30% battery life.

Have an iPhone 5S with iOS 7.x and won't upgrade to iOS 9.x as iOS 8 is not available anymore but was told by many Apple-related technicians and read on many media articles that iOS 9 is a relatively battery hog and meant for the Newer iPhones. It will drain the battery in the older iPhone 5 models!

One does NOT need to be running apps in the background for the battery to be drained.

Shut off all Non-Essential apps/settings not running like Turning OFF 'Location Services' and ALL 'Push' services to Manual push.

All this will do is slow the battery drainage.

If one still has either iPhone 5 models, it'll be ~2-3 years old and a newer battery may be needed.

Battery replacements are available for sale online but many can be questionable based on the reviews.

Kits are for those people who are confident in their manual dexterity skills.

Otherwise, look for a local battery replacement store in your area and pay a slighter higher cost to replace the battery.

If you worry more about the quality, then pay Apple MORE to replace the battery!

MrMojo wrote:

Have an iPhone 5S with iOS 7.x and won't upgrade to iOS 9.x as iOS 8 is not available anymore

???

So if iOS 8 was still available, you'd update to iOS 9

You don't need iOS 8 to upgrade to iOS 9.

iOS 9 runs fine on 5S and no more battery drain the iOS 8

Hum, this problem has presented on my sons iphone 5 which is otherwise spotless. He likes to use it for frun keeper. Makes sure its at a 100% but barley makes a mile before the phone has switched off

When he gets home it prompts to put the power in when you do so it restarts with 40% + battery life.

Its no use advising the calibration method, you cannot calibrate as it shuts down half way through a battery cycle.

These DFU and Restore and Resets and Battery Recalibration did not work for me.

I have suffered with this switch off problem for 6 months now. Finally I think I may have fixed it.

Firstly, just turn the phone to low power mode after a full charge and revel in the long battery life. Irrespective of the excitement you will see in the battery lasting so long, do observe whether the phone turns off or not.

If you find that the phone doesnt turn off, then it is clear that there is no hardware problem. Now your culprit is either an app that uses background data, or an app that uses location.

For me, turning off background app data worked and my phone drained power gracefully and turned off only after 1% charge. When I turned it back on I started getting shutdowns at 40% or 20%. I seem to have narrowed it down to whatsapp.

Try turning off the background app data for whatsapp, or better still, uninstall that godforsaken app and your $500+ iphone will show no battery problems.

So, whatever happened to the OP's issue?

I have an iPhone 5S on which is about 3 years old and just recently started to shut down around 47-ish % battery. Dropped calls and other crap like dying out before it is time which is obviously frustrating. I'm on 10.1.1 by the way.

I was bored one night and upset with my phone, so luckily, I have a spare part iPhone with a motherboard issue, but a good battery, so I went through the hassle of swapping out batteries (Oh gee, I hope that's not taboo here about DIY, but I didn't want my old iPhone 5S going to complete waste after experiencing blue screen issues after the warranty expired and no, the terminal reboots were not from a newbie screen change because that had the original). Anyways, problem solved with a battery change like so many others in this topic!

The old battery seemed somewhat squishy like fluid was within the wrap. I was going to experiment first with restoring and all that shizzy to document my repair, but I'm glad I just went with a gut feeling about an issue with the battery because that's exactly what it was because my parts phone is experiencing the same issue because it has my old battery in it now.

Three years of battery life until failure... I suppose that's 'alright' with daily charges and whatnot, but what a pain in the arse to change and makes me wish I simply bought a brand new battery for all that trouble. At least the 5 model has a pull-strap to dislodge the battery while the 5S has weak glue strip pull cords which rarely work. In fact, neither worked in either phone.

My phone has recently been dying at 12%-30% battery life. When I plug it in and turn it back on it shows the same amount of battery life that was there before. I'm aware that this is a known issue, however, my phone's serial number does not fall within the scope identified by Apple to qualify for a replacement. How should I proceed in resolving this issue?

I now have the battery shutdown problem also on my iPhone 5...started a week ago when my Personal Hotspot stopped working and I was forced to upgrade to 10.1.1! With all of the 6 & 7 problems of late, and unavailability of 7(Plus), guess I'm gonna need to go Android, and at this point I cannot say I will miss Apple.

When you say to shut it down and leave it for 4-6 hours, do you mean to shut the phone off but leave it sitting on the charger for 4-6 hours? Or shut off the phone and let it sit OFF the charger for 4-6 hours?

This is happening to my iPhone 5 as well, and this is almost 4 years later (2016-2017, with iOS 10.2). It started off dying at about 20%, then 30-40%, to 60% to 73% specifically, to 90%, and now 100%. I have to keep my phone plugged in all the time, and that's really annoying.

I'm trying to see if wiping it would help, and hopefully it does.

This is the most intelligent approach to this issue that I have read!

I just had a new battery installed in my iPhone 5 TODAY and it shutoff on me at 30%. SO I'm hoping it's that the new battery needs to be "calibrated" as per repair guy instructions (let it charge fully, then drain to 20% & then repeat 2x) sounds like hogwash to me, but I'll do it. If/when that doesn't work I'll try your suggestion.

This is crazy - the Apple store in Cape town ran their diagnostics on my battery and it came out 100%!

My phone repeatedly shuts down at 75% battery life and I tried resetting and also restoring my phone.

No luck! There must a simple answer to all these problems?

I am running latest software and after restore a few days ago must be latest firm ware too?

Apple please get back to me - you are usually so efficient?

barrylsack@hotmail.com

My wife has an iPhone 5s with the latest iOS (10.3.2) that is shutting down randomly, usually at about 75% battery. To power the phone back on you need to connect to a charger for a couple of minutes, then it comes back on and shows, say, 78% battery, After powering on, you can then use then phone normally (unless it powers down again) until the battery becomes flat at 0%, sometimes this can be a day or more without connecting to the charger again.

When the problem first occurred, I backed up her phone and swapped it for my old 5s that I'd used for a couple of years with no problem. Now my old phone that's had her backup restored to it is exhibiting exactly the same problem.

I've tried changing the clock settings and done the recommended battery re-calibration multiple times to no avail.

From the observations above I think I can rule out a fault with the battery as it has happened on two sets of hardware. I can also rule out battery calibration, as once the phone is powered back on it will continue to work for ages without a further charge. So the conclusion must be that there is a problem in either the iOS or an app. Given that she has only 5 or 6 apps installed, I'm leaning to the former!

I have the same issue. My phone battery meter says 100 but shuts down. I plug it in and it turns on back. When it is fully booted, it still says 100. If I should unplug it, it'll shut off again. I recently updated my iOS to 10.3.2.