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iPhone 6s turning off at 10-20%

spookit said:
you meant to tell me that both original and replacement batteries are faulty, after apple support's battery diagnosis gave a pass?
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Yes, the original battery was not performing optimally due to having gone through too many charge cycles within the year of you having the phone. It's not a "failure" of the battery as such. It's a systematic degradation but is propelled when you charge your phone too often up to 100%. Such issues don't get caught in the diagnostics Apple have. In fact no diagnostic test can catch such issues at present. It happened to mine as well and that's why I got it replaced even though Apple kept saying it's fine based on their diagnostic results.

Your replacement battery is faulty inherently, that's why the phone is behaving abnormally. Chances of such occurrence with original battery is almost none and even if it does happen by chance, Apple will replace it again free of charge.
 
akash.nu said:
Yes, the original battery was not performing optimally due to having gone through too many charge cycles within the year of you having the phone. It's not a "failure" of the battery as such. It's a systematic degradation but is propelled when you charge your phone too often up to 100%. Such issues don't get caught in the diagnostics Apple have. In fact no diagnostic test can catch such issues at present. It happened to mine as well and that's why I got it replaced even though Apple kept saying it's fine based on their diagnostic results.

Your replacement battery is faulty inherently, that's why the phone is behaving abnormally. Chances of such occurrence with original battery is almost none and even if it does happen by chance, Apple will replace it again free of charge.
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I've owned every iphone since 4 and i know exactly what happens when a battery is degraded. my original battery had 360 cycles, well below apple's 500 cycle/80% capacity spec, pulling 4.12v which is well above 3.82v design, 1500mah out it's original 1715mah design capacity, it lost only 13% capacity after one year and is in no way the main problem why this happens(which is confirmed by apple's battery test).
this issue to me is clearly a design flaw either with battery controller or ios module.
 
spookit said:
I've owned every iphone since 4 and i know exactly what happens when a battery is degraded. my original battery had 360 cycles, well below apple's 500 cycle/80% capacity spec, pulling 4.12v which is well above 3.82v design, 1500mah out it's original 1715mah design capacity, it lost only 13% capacity after one year and is in no way the main problem why this happens(which is confirmed by apple's battery test).
this issue to me is clearly a design flaw either with battery controller or ios module.
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Agreed. When my phone was serviced by Apple for the shutdown problem, they replaced the battery and the logic board. Battery is relatively cheap, but the logic board costs pretty much half the price of the new phone so it's not like they'd do it just in case.
 
spookit said:
I've owned every iphone since 4 and i know exactly what happens when a battery is degraded. my original battery had 360 cycles, well below apple's 500 cycle/80% capacity spec, pulling 4.12v which is well above 3.82v design, 1500mah out it's original 1715mah design capacity, it lost only 13% capacity after one year and is in no way the main problem why this happens(which is confirmed by apple's battery test).
this issue to me is clearly a design flaw either with battery controller or ios module.
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I was thinking the same when it started happening with my phone and it was exactly the same situation, I took the plunge and got the battery replaced because I need a reliable device for work and since then it's working just fine.
 
My 6S with fresh Battery still turns off at 10-15%
I will now try to turn off background app refresh completely, which was reported to work here in earlier posts. Frustrating :(
 
What is a good way to test if this is fixed or not? Just running a game and draining the battery to 0% and if it doesn't die before then it's fixed? Or does this only happen when actually using phone, like in my experience I've had it happen when i am going from one app to another?

I want to see if I am in the clear.
 
LoriMeyers said:
What is a good way to test if this is fixed or not? Just running a game and draining the battery to 0% and if it doesn't die before then it's fixed? Or does this only happen when actually using phone, like in my experience I've had it happen when i am going from one app to another?

I want to see if I am in the clear.
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Just use the phone normally and let the battery drop to 10% or below. You don't need to drain it out completely.
 
akash.nu said:
Just use the phone normally and let the battery drop to 10% or below. You don't need to drain it out completely.
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So if I am able to fall below 10% without it shutting down beforehand then should I consider it fixed? Because I restored factory settings and did some fixes with an Apple genius over chat and I want to know if it fixed my issue. Or will it sometimes happen and sometimes not?
 
LoriMeyers said:
So if I am able to fall below 10% without it shutting down beforehand then should I consider it fixed? Because I restored factory settings and did some fixes with an Apple genius over chat and I want to know if it fixed my issue. Or will it sometimes happen and sometimes not?
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Hold on, we are talking about a hardware issue. What you're talking about is literally the very first step that Apple and any other manufacturer always suggests to rule out an issue with corrupt software.

Although I've never seen a sudden shutdown issue to be related to softwares but before Apple try to have a look at the hardware they want to ensure you've done all the software related trouble shooting.

So here's my opinion - keep using the phone for sometime. You may not see the issue every time but if you see it not appearing after a whole week of you being using the phone normally and letting the battery to run down to 10% or below then you can conclude that yours was a lucky case and has been resolved. Otherwise is Apple Store and battery replacement.
 
Right after I posted my last reply, the phone shut off at 20% battery and turned back on and said it was 24%. Returning the refurbed phone to Best Buy and buying a new iPhone 6s from the Apple Store. Do you think new 6s will be safe from this problem?
 
akash.nu said:
Hold on, we are talking about a hardware issue. What you're talking about is literally the very first step that Apple and any other manufacturer always suggests to rule out an issue with corrupt software.

Although I've never seen a sudden shutdown issue to be related to softwares but before Apple try to have a look at the hardware they want to ensure you've done all the software related trouble shooting.

So here's my opinion - keep using the phone for sometime. You may not see the issue every time but if you see it not appearing after a whole week of you being using the phone normally and letting the battery to run down to 10% or below then you can conclude that yours was a lucky case and has been resolved. Otherwise is Apple Store and battery replacement.
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I find your comments about battery replacement a little misleading.

Replacing the battery is known to either help or not, with no way or telling in advance, so you should not strictly request the battery replacement as it might not work. This is what I've been told by an Apple genius.

When you come to Apple with the shutdown problem they either give you a new/refurb phone or replace battery and the logic board.
 
unclemax said:
I find your comments about battery replacement a little misleading.

Replacing the battery is known to either help or not, with no way or telling in advance, so you should not strictly request the battery replacement as it might not work. This is what I've been told by an Apple genius.

When you come to Apple with the shutdown problem they either give you a new/refurb phone or replace battery and the logic board.
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How's it misleading? Apple genius will only tell you steps according to their guidelines and in any tech troubleshooting situation it's always advised to rule out software issues before looking at hardware because it's more expensive and time consuming.
 
akash.nu said:
How's it misleading? Apple genius will only tell you steps according to their guidelines and in any tech troubleshooting situation it's always advised to rule out software issues before looking at hardware because it's more expensive and time consuming.
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Your insistence that battery replacement will fix the issue is misleading. It is known to be not true.
 
unclemax said:
Your insistence that battery replacement will fix the issue is misleading. It is known to be not true.
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Any link to such a thread? I'm talking from my own experience. Why wouldn't replacement of battery fix it anyway? I mean if there's an issue with it after replacement then Apple will take care of it being within 90 days of replacement warranty.
 
akash.nu said:
Any link to such a thread? I'm talking from my own experience. Why wouldn't replacement of battery fix it anyway? I mean if there's an issue with it after replacement then Apple will take care of it being within 90 days of replacement warranty.
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Did you read all 17 pages of this topic already? I am speaking from experience, too. This is what I have been told by a Genius, that he did not recommend requesting just the battery replacement. And when my phone was repaired they replaced the logic board. Why would they do that if it was enough to just swap the battery?
 
unclemax said:
Did you read all 17 pages of this topic already? I am speaking from experience, too. This is what I have been told by a Genius, that he did not recommend requesting just the battery replacement. And when my phone was repaired they replaced the logic board. Why would they do that if it was enough to just swap the battery?
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I don't think I've read all the 17 pages but read a lot. I'm just saying that it worked for me and if there's any other problem then while checking the hardware before and after fix they'll find it and will let you know.
 
My phone now gets under 10% before shutting down, but I have noticed the last few days that my battery will drain real fast. I'm at 36% right now, and I have hardly used it today. When I plug it in to charge, it will jump close to 60% within a few minutes.

Could this still be a software issue?
 
Jessica08 said:
My phone now gets under 10% before shutting down, but I have noticed the last few days that my battery will drain real fast. I'm at 36% right now, and I have hardly used it today. When I plug it in to charge, it will jump close to 60% within a few minutes.

Could this still be a software issue?
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This could be. I'll suggest a restore and setup as new.
 
Guys, wtf is going on? We have been expecting an "official" approach to shed some light, but the case remains unresolved for many weeks now. Rumors, rumors and speculations.. The topic has reached the 17 pages so far, I have heard many of my friends with 6S facing the same problem, and nothing specific so far. I do believe that either it is a logic board issue (so we are talking about a massive replacement programme, something that Apple avoids), or a "massive" iOS10 bug, and the "genious" engineers have no idea what to do...
Please, any ideas to... bring Steve Jobs back to life???
 
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Managed to run my bettery down completely today using the torch and Youtube at full brightness. It stayed on 1% for ages before switching off. Let's see if this has helped.
 
vonglower said:
Guys, wtf is going on? We have been expecting an "official" approach to shed some light, but the case remains unresolved for many weeks now. Rumors, rumors and speculations.. The topic has reached the 17 pages so far, I have heard many of my friends with 6S facing the same problem, and nothing specific so far. I do believe that either it is a logic board issue (so we are talking about a massive replacement programme, something that Apple avoids), or a "massive" iOS10 bug, and the "genious" engineers have no idea what to do...
Please, any ideas to... bring Steve Jobs back to life???
Click to expand...

Steve jobs would have been the first one to deny any defect.
 
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