iOS 10.1 Battery drain

Malanthius, am not defending the OS nor condemning it. I replied to specific cases of 700-1000 cycles as operationally done. Used http://www.apple.com/ca/batteries/service-and-recycling/ as a reference. This is a bullet proof argument: if anyone has passed 500, 600, 700, 900 cycles, it is an awesome feat and well above design. fact. Science also tells us that they can fail, at that point suddenly. Fact. If you disagree with that, you would have to write a thesis defending the contrary and it will not pass any technical review. google "Android battery drop to zero" and you get 389.000 results... Is it iOS? Nope, Androind is not iOS. Same symptoms. Science fact. 600+ cycles, it is kind of unrealistic to expect 4 years on a 6/6S as a prev user claimed. 2,100 cycles? That is aeronautics grade...

Oh Bel, are you still here? Bless your cotton socks. You are telepathic. I rarely use cotton socks, but after a surgery last week and on crutches, asked the gf to buy me a bunch and am happy not to be cold.

No long essays- and happy it worked for you. http://www.apple.com/ca/batteries/maximizing-performance/ and http://www.apple.com/ca/batteries/why-lithium-ion/ answers it. Check out temperature explanation. What maybe new to some users is Depth of Discharge; sub 30% discharge is a different beast than 100-40. Repetitive high drains sub 40%, even a dozen, can spoil the Li liquid. Dries faster. In the Iraqi dessert all makers failed in a dozen days. I had a sandwich mini cooler pocket, and kept my phone off from 7 AM until 9 PM nightime when it dropped to 90F and no problems.

lets try this again. So if your phone is two years, and you live and Brazil, chances are you may have gone several days over 40C, a week at Copacabana can be too much for electronics http://www.apple.com/ca/batteries/maximizing-performance/ Anything over 35 is too hot. If you have lots of cycles >700 in a hot humid climate, not the same as Europe. Maybe authorized centers around you can provide accessible options.

"Your battery is designed to retain up to 80% of its original capacity at 500 complete charge cycles. The one-year warranty includes service coverage for a defective battery. If it is out of warranty, Apple offers a battery service. Prices and terms may vary." at http://www.apple.com/ca/batteries/service-and-recycling/. Watch and iPad are 1000, but only up to a third/500 cycles for iPhone. Hopefully your provide feedback as to how it works?

Hey toothsaw, when you plug in the battery pack you do several things. You got from wall AC/DC adapter straight to battery DC current. You also change the amperage. The value of the adapter is well explained here, and if ever there is a reason to prefer Apple original vs fakes is here: http://www.righto.com/2012/05/apple-iphone-charger-teardown-quality.html?m=1 . The 6 can only do 1.6 Amps, the wall cube (hopefully original) 1 Amp. Your battery case, something else- likely within specific specs, you might know that but without hooking it up to measurement tools hard to tell. I once had to buy a convenience store charger as I misplaced mine, after I was done I threw it away.

Power rating for iPhone 6s charger ?

http://www.apple.com/ca/shop/question/answers/iphone/will-a-21-amp-charger-damag e-my-i-phone-6-s-plus/Q2DXC4PTJ7KADKF9Y

What all of this means is that if you get different results with different currents, the correct lab/class troubleshooting solution is to suspect immediately the battery. I do understand that it started with the iOS- itself with own amperage, but the technical step is always the same. Apple Support at Genius Bar or Sr Apple Support should be able to assist you and your issue will be resolved. Perhaps you are over 600 cycles, and it all comes down to the same technical steps.

A bit of anecdotal evidence, had a new iPhone 4 dying in a month a few years ago. In my case I had bought with the iPhone 4 a Belkin car adapter from the Apple Store and was doing hundreds of miles of Hwy driving that month, phone plugged in. I lost 3 car fuses in that month, and the iPhone right after. Fuses # 2 and 3 were my experiment to isolate the issue- it was the Belkin Adapter, one fuse per long ride; provided Belkin feedback, Apple reimbursed me, shortly after they were gone from the store. Could not have been isolated. Since then, minus that convenience store emergency, never again let a non-Apple device providing power to my Apple device; and I cycle the Apple adapters once in a while.

"right after the iOS update 10.2 > 10.2.1 my iPhone rebooted on 50% brightness although the slider was to 100%. I never set autobrightness to ON neither set the Low Battery mode. At that point, the device had about 40% battery remaining." dear alexander, all my Cyprus friends are like you: fiery and determined, no nonsense. That is how you guys built the hellenic civilisation and fought off invaders. In this case, i can only point to your ancestral greek problem solving, methodical, logical. My 6S is so bright I can never use it pass 50% At night I dim it to 0. And running latest build. So there is clearly an issue- no idea yet. Is Low Power enabled? Auto brightness (I anticipate you replying No). Reports for such a dimming issue, rare go as far back as iOS 6 iphone 5 iOS 6 screen dimming problem. Anyway, the classic steps, try Sr Apple support, explain the absolute importance of the issue. Or Genius Bar. I think your odds of resolution are very high 🙂

Try checking with your phone's serial number on the below link: (You may turn out to be lucky, Apple plays it like a lucky draw!!! )

https://www.apple.com/support/iphone6s-unexpectedshutdown/

It still says September to October, but the guy at Genius Bar told me they recently extended it by a week because of a lot of complaints from customers. (The guy was empathetic for my situation, because probably he's seen a lot of customers coming for help with similar issue. But the company is still in denial mode!!!) In case you haven't submitted a formal feedback/ complaint to apple on their website, please do so.

Hi Mjolcresure,

Your seeing as you're using an iPhone 5 your battery may be eligible for the replacement program. Check to see if your serial # is eligible. To get your serial # go to Settings > General > About.

https://www.apple.com/support/iphone5-battery/

iPhone 5 with iOS 7 randomly shuts off and

iPhone 6s shuts down with over 40% battery power

https://discussions.apple.com/thread/5451794?tstart=0

iPhone5 shuts down at 20%-30% battery since new IOS7 was installed

Tous datend avant iOS 10.

No, not at all, and disappointing from a smart guy as yourself. This is called a Straman Fallacy- twisting words and beating up a trumped up statement. I wrote "have been built since the very first analog mobile phone." Not with iOS 10. And I also will link below some of hundreds of links, some shutdowns (including June iP6), predating iOS 10. So, they existed in nature before iOS 10, right? https://www.youtube.com/watch?v=Klme6nE8sqs Contrary to your claim that "99% of users had this with iOS 10" that is a false statement.Google Pixel, growing forums 3 months in, shutdowns. 3 million hits for Android. If you wish to learn the difference between fact theory or law, check it online. Circuit protection are not a theory, they are LAW. A Law is something beyond a theory, a known, tried and tested way things work. In some parts of the world, legally mandated by agencies such as the US Department of Energy.

iPhone 5 with iOS 7 randomly shuts off and

iPhone 6s shuts down with over 40% battery power

https://discussions.apple.com/thread/5451794?tstart=0

iPhone5 shuts down at 20%-30% battery since new IOS7 was installed

As far as I am concerned, you would have gotten similar symptoms if you randomly decided to factory reset iOS 8, 9 or 10. An example of theory is if a phone shuts down one in 20 cycles, and after hypothesis, we conclude that that Radiology worker was accidentally bringing their phone in the MRI chamber- likely causing magnetic inductance and triggering a shutdown. But normal wear and tear shutdowns are Law.

If you ever drop your iPhone in the bath (knock wood), and it shuts off, thank engineers whom built in the circuit breaker to prevent 7 milliamps from hurting you.

You could top charge to 100% then let is slowly drain to 0% (or shutdown) + 2 hours. Then full charge to 100% + 2 hrs. On a good battery avoid doing this frequently, Li Ion hates that. Then check numbers. A backup and a General/Settings/Reset/ Factory is another way of resetting everything, then reinstalling your backup. As for the Genius Bar, they sometimes take walk-ins but are much more appreciative if you book online. Click iPhone/Hardware or Performance/Make a Reservation. You should get several blocks, same day or ensuing days. They will thoroughly test your phone for 30 min or so. Apple Phone support also can book the appointment for you but I prefer online http://www.apple.com/ca/retail/geniusbar/.

Nope. The problem never was the iOS, was it? It did exactly what Apple wanted it to do. Now that the fun has begun, are you still here?

nope. Fled away ashamed. Or fired. Or still thinking, what to respond... better so for everyone.

Update to the issue which has gone for my phone (6, 64 GB, 16 months old, load-average twice a week):

Herein, I only refer to the problem of sudden shutdown event (SSE) with incorrect battery status display and power-on-event at the same level with charger attached (i.e. shutdown at 25% and power-up with charger at 25%). The value of 25% is just a random number, so I had another SSE at 40%, and a third one at 18%.

Steps done so far:

• After SSE: phone charged in powered-off state (attached charger, slide to power-off).
• Hard-reset done (power- and home button pressed until apple logo is displayed - about 10 seconds). I've done the first hard-reset already before charging.
• It was important that in the powered-on state the phone reached 100% battery counter status. Herein, the indication for it was the following:
  After charging and having 100% in the battery status, used to wait at least for a minute, then checked the iPhone Settings -> Battery-> scrolled down and checked if the usage counter correctly started (it displays hours that passed after last complete charging for usage, and standby). If it still didn't count, the battery-controller (or whatever you call it) didn't reach the correct 100% state.
  Note: if you charge the phone in powered-off state -> I've observed that it is required to power it on and wait in order to get the 100%: but if you power on, do not detach the charger from the iPhone. Detach it after the power-on and full 100% displayed in the status.
• Apps: Of course, I checked some of my apps/settings: the most important setting - in my eyes - was to remove ALL apps running or at least being displayed in the background. The second important step - was to modify iCloud email account from PUSH to PULL-requests (Settings -> Mail -> Accounts -> iCloud). Further, I observed that even if the location sharing was set to "off", there were some apps which had an undefined state for the share-option (so no setting was set as default: in this case I just defined it).
• I monitored the battery status with Battery Life for at least 3 battery usage cycles (3 times charged).
• My personal guess is: the installer for the iOS 10 update messed up the battery controller status.
  For such an OTA (over-the-air) update, the customer expectation is that it runs smoothly. In this case, the things went totally wrong.
• I still didn't check if any intermediate charging (i.e. at 40% to 100%) will again mess up the controller status: herein - from time to time I need to do it - if I go for a longer journey. I will post update to it.

Maybe, some steps were redundant, but let's see. For the moment, it works fine.

Hi there. It's been a long time since my last post but I've been following this thread though.

• iPhone 6S Plus here, with sudden death issues at 17-40% since iOS 10.1.1
• Done everything: restore with icloud, restore as a new phone, Apple Support diagnostics via Twitter (i'm from Portugal, no such thing as Apple Genius here), battery calibration
• Updated to iOS 10.2.1: my experience so far is pretty good. The sudden death issue has stopped and the battery life seems extended. I've done two full cycles from 100% to 5% battery with a normal use of 10 to 12h (facebook, music, podcasts, safari, low graphics gaming and some minecraft).

I guess the issue, if not completely solved, is at least contained for some users.

And as I always stated, the issue (for my case) was bound to software issues. Nothing to do with hardware.

If the issue returns I'll be back here.

Hope it helps