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iPhone 5 IOS 7 battery dead when really at 29% after taking photos

My iPhone 5 (1 year old now) has started having a battery problem since I upgraded to IOS 7. It will shut itself off under these circumstances:

  • battery is below 40%
  • I take a number of photos using the Apple Camera app
  • photos taken in rapid sequence (no flash) or one or two taken with flash


The next thing I know I see the radar symbol and the phone shuts off. If I try to turn it on I get the drained battery icon with the power plug moving into the screen an it turns off.


I then plug it in to turn it on and find that the battery is still around 30%. If I am not near my charger, I can wait about a half hour and power the phone on. I just did that and the battery is at 29%.


What is going on? This is not right. I've never seen this before and have had 2 other iPhones. Any thoughts or ideas appreciated.

iPhone 5, iOS 7.0.2

Posted on Oct 7, 2013 12:09 PM

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Question marked as Top-ranking reply

Posted on Oct 28, 2013 12:45 PM

I just had this issue happen to me today on my almost 1 year-old iPhone 5 with 7.0.2 while watching video. I was surprised when it shutoff as I didn't recall seeing the warnings at 20% or 10% and it turned out when I plugged it back in that it was at 26% charged!

242 replies

Nov 28, 2013 11:22 AM in response to windermerelodge

I doubt that it's a hardware issue. I never had the problem until I installed iOS7. My guess is that it has something to do with how iOS7 detects a low battery condition and initiates the iPhone shutdown sequence. I'm betting iOS7 falsely sees a low voltage dip after a large instantrous current discharge as a condition that requires the shutdown sequence to be initiated. iPhones have always shut down in stages if the battery gets too low but this used to require that the battery be very low; 5% range. I'm guessing that something has changed in iOS7 to make it think these short voltage dips are a problem when in fact they are not. Just my 2¢. Don't know why someone from Apple doesn't post about this issue. Wish they would. It's obviously a problem based on the number of people who are experiencing it.

Nov 28, 2013 1:52 PM in response to avatarsound11

I am having the same issue with iphone 5 , since I installed ios7.... battery 30% try to go on safary, the phone shuts off. plugged in the battery is at 30% again. out of warranty of 20 days... extremely annoied, I have been an Iphone user since the first Iphone... maybe I should change brand?? I am an apple supporter I hope there will be a fix soon. please do not ignore this problem.

Nov 29, 2013 12:28 AM in response to avatarsound11

Hi Logy,

I'd agree and the point hAs been made elsewhere in the thread.

Apple (uk) seem to be replacing the odd handset claiming a battery fault, telling ppl they're SOL and out of warranty and/or deleting posts rather than actually dealing with this issue - leading me to suspect its actually pretty widespread.

It almost certainly has to be software and related to the battery discharge algorithms.

Nov 29, 2013 2:08 AM in response to Vincienup

Apple doesnt really listen to any of this stuff. In fact I am of the opinion that these discussions are holding bays for potential complaints taking the flak off them. Take control and vote with your feet. Iphones should now just go where the sun dont shine. Brand loyalty is not really sensible if the products dont do the basics. Anyway Im done on this good luck.zzzzz

Nov 29, 2013 9:15 PM in response to avatarsound11

Hi Mestrade0,

In my experience a wipe is likely to do nothing productive in this instance - the equivalent of First Line doing a defrag and house keeping to be able to post a resolution and get you off the phone.


In my own experience, and that of others, the issue here seems to be ios's battery use prediction - due to current technology traditional methods like tracking cell pack voltage are unlikely to work so speculation is that iOS is essentially 'bucket counting' at a conceptual level to meter/predict battery status.

Once it decides the battery should be empty, your phone dies.


You can jump start the device with a minute or so on the charger, at which point it will likely come back up at around 30-40%. Unplug the phone immediately and continue until it dies again, and repeat.

By the time you reach the third or fourth iteration, the phone will be properly drained. At this point it needs a full charge, uninterrupted. At least four hours, preferably overnight should do it.

This should get you a functioning phone back but note it is not a fix, but a work around. The issue will return with normal use over time unless the underlying software issue is addressed.


Clearly this is not convenient and borderline unacceptable in this device category, but it seems to be all that's out there right now unless you play ball with Apple on the phone and after wipes, removing apps etc get a battery diagnosis and a replacement handset


Good luck!

Nov 29, 2013 10:48 PM in response to Vincienup

Thanks! That's what I figured. Originally they suggested I wipe the phone, and then not restore it fully from my back up until I saw whether or not resetting the phone solved the problem. But since the problem is random, it could be a few days before it happens again, not having all of my data on the phone for a few days isn't really an option.


Agree, not an acceptable fix for a device at this price point. Especially when it's less than a year old.


Appreciate the feedback.

Nov 30, 2013 7:26 AM in response to mestrada0

They had me wipe twice and it did nothing but make my life inconvenient for about a week. They ended up sending me a new phone, but I'm not hopeful that it will help because I believe the problem is in the OS NOT the phone itself. Of course the biggest problem is with Apple and how they are sweeping it under the rug.

iPhone 5 IOS 7 battery dead when really at 29% after taking photos

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