iOS 10.1 Battery drain

One week later, my wife's replacement iPhone 6 (thank you magnanimous Genius Bar supervisor!) is working as one would expect a $700 device to work on iOS 10.2. 12 hours of continuous use in WiFi and still at 45%.

Just putting my two cents into the pool. I have an iphone 6 and I've been having this problem since iOS 10. I first noticed it would die around "40-50%". It really wasn't at that percentage, but that's what it would say anyways. I would plug it in, let it set for a few and it would miraculously turn back on at 80% or so. Well it's gotten much much worse. My phone only lasts roughly 30-45 minutes now. I wake up. Unplug it. Check your normal morning stuff annnnnd it's dead. As of a few moments ago, I looked at my phone and it was 77%. It's been probably roughly 10 minutes and it's at 9%. This is unreal. I don't even use my phone THAT much. It's basically an email machine. No phone calls, text or anything. If this doesn't get resolved soon I may turn my back on Apple all together. I've had their products for well over 10 years now, but this is getting ridiculous. I've been on important phone calls and lost them because it bricked. I missed taking photos of my 1 year old twin's milestones because... oops its friggen DEAD AGAIN. I can't even rely on it for safety. I have to make sure I have some kind of power source around me at all times. It's like caring for a newborn baby but a lot more annoying. FIX THIS PROBLEM!!!!!!!!!!!!!!!!!!!!!!!!!!!

Dbarlo, very frustrating, esp missing the 1 yr old's picture. But good news for you: every single user that came here and pursued resolution steps (diagnostics, Genius Bar or Sr Apple Support, Authorized Service Center) had their problem resolved. Over fourteen successfully resolved with battery replacement a few more had phone replacement. As you start this process, be mindful, however, of your battery age. If your 6 has over 500, 600 - or 1000 cycles like some do, all bets are off as the technical world sees it as done and why it would do this. If they recommend you a battery replacement, in that case, they are correct. If, however, you have a low cycle number, wait and see what Sr Advisors recommend. Other users, as myself, over the years fried iPhone with non-Apple cables. So variables are many. You might point out it started with iOS install, we know, as do all here whom resolved it. Bottom line is all these installations are stressful for batteries, and marginal batteries may fail calibration and firmware on such high demand cycle/install.

So you can have this thing resolved in hours or days, depends where you are and how quickly you determine the problem. You will also see people spending inordinate amount of time insulting Apple, and their issue is never resolved. Then, you have users whom resolve it. Time is important. Some are lucky with xtended warranty, or courtesy service from Apple, reverse authorization shipment, etc.

Well well, I guess this is the fastest update ever: just updated to the last version, my phone was completely charged. Played like 5 minutes of a game and the battery dropped to 95%, and that's when the phone died. Had to plug it again, and when the phone went on, I had 88% of charge, not 95%, as "expected". New update, same problems

You have a warranty coverage at the moment; had justasked before if they had done a reset and not just plug-in the battery. at a genius bar they can do several things, including reset, firmware reset and have it all calibrated that way.

I haven't had the battery exchanged yet, I have an appointment at an authorized Apple Store on Wednesday. I only updated to the newest version of iOS, same problem. I guess the battery exchange will be the only solution. Well, after I get a new battery I will post a update

Precisely. There have been 6x iOS 10 versions, 10.0.2, 10.0.3, 10.1, 10.1.1, 10.2 and 10.2.1, if none of them fix it, chances are it is not the iOS. I would not have the time to do so many install tryouts. Curious, do you use a genuine Apple adapter/charger? Brazilian friends told me that the Brazilian grid is notorious for creepy irregularities.

"There you go defending the OS again. Hilarious. You claim not to but you do it all the time. " What is hilarious is your condemning without a shred of evidence, while ignoring all evidence to the contrary. There is no college, university or grad school where a student can pass his electronic labs with such speculations as yours.. Dozen+successful battery swaps; plus more successful iPhone swaps, and he will still argue that coding is wrong. Clinically it is a slamdunk. This is real scientific method, the same since Volta, Descartes, Edison, Tesla- the cornerstone for all modern industrial science.

Read Samsung's findings Just released.. Turns out that the same two manufacturers are major Android brands supplier. Faulty battery circuitry... How could tech minded people forecast it before the actual finding? because it is logical. And the barely launched Pixel, barely selling, already with issues.. https://www.reddit.com/r/GooglePixel/comments/5kiw4p/google_pixel_battery_drains _to_0_abruptly_from_30/

http://gadgets.ndtv.com/mobiles/news/some-google-pixel-users-reporting-early-bat tery-shutdown-issues-1642806 Will you blame iOS too?

For more gravitas you would have build your own boards, acid-etch the circuit, multiplex-code it to life, troubleshoot it, and then discuss with class colleagues how theirs were built. If every owner whom fixed it listened to you, or went 3d party battery, with poor outcomes, what is the point of the forum.. If I remember correctly, you went down a 3d party battery route, not very smart. Terrible misleading input. They are just terrible. And can fry devices. Swell and brick them. Here is just an authoritative UL link how fake chargers and cables alone can fry devices: http://bgr.com/2016/12/02/apple-charger-price-fake-counterfeit/

And yet none of these people including myself had battery problems before the update. What is the common factor here? The update. And you have no clue as to wether the update will start killing these new batteries. Sometimes when you are a fanboy you cannot see the Forrest through the trees.

and I had no battery issue before iOS 7 on my 5. Yes, it was the battery because Apple Support convinced me. And a return to technical reading educated me since. Nor Android users without battery issues before Nuggat. Multiple users cycled through six version of iOS 10. One just just reported success, in his case, with 10.2.1, others do not. You are arguing in a field you do not know much, namely, electronics, electrons, light speed, circuitry, coding etc. As for your speculation on iOS, you forget that the number one killer of batteries is normal wear and tear, cycles, fake cables, and everything else possible before an iOS testing labels it a fail battery, thousands to one. You also just do not get it - they all fail similarly. Months ago there were forums here on the same issue with iOS 9. And before that, 8. Tiny groups.

Am fortunate to live in North America and afford a new iPhone on a whim. But here you have people from countries such as Brazil, where the economic purchase is ~ to 2000$+ of our own dollars. It is unethical, and unconscionable, to suggest 3d party and risk having their phone fry. Unethical to speculate, suggesting they should wait and blame Apple, or to have them take a risk with a faulty battery instead of resolving when it sounds faulty. And resolve they have.

made some tests in the last few days with my i5s/iOS10.2. The shutdown still happens at ~20%, but i think i just found that nasty, missing 20%. In the afternoon i charged my phone to the very maximum, at 4PM (hu time) i took it off the charger, then went home, during traveling listened to music, at home some safari-browsing, checking emails, usual evening routine. After 6 hours of standby, from which 1,5 hours was music listening and all the stuff above, i discovered, that my battery is still at 100%, no drain for 6 hours... strange, isn't it? For me too. Even stranger is, that after putting my phone on a charger for 2 minutes nullified the counters, so i have 0 minutes since last full recharge. Probably the normal drain will start after dropping to 99%, then shut down at 20%. I already checked my battery with 3 different test-apps, all of them said, that my battery is in perfect condition. After all these above i wouldn't say so surely, that the battery is dead. One thing i will still do: downgrade to iOS 9.3.2. and check it that way, i am very curious now.

"downgrade to iOS 9.3.2. and check it that way, i am very curious now" genya, not possible to downgrade, that was discussed before. even the library file will not work. Tried it on a 5. What is possible, very true, Genius Bar can redo former firmware,that is a 2+ hr appt.

It's obviously an iOS problem. He can't blame the battery if it's 100% condition on the app and if Apple verify its 100% condition. So dumb always thinking its the battery, my old iPhone 4S still lasts longer than my iPhone 5. Anyway on my iPhone 6 Plus it's only drained 1% after using it for an hour so I guess that's good right?

You already know the answer, and if you read the just-released Samsung technical report, you might rethink your approach. There were users here whom had a 'fine' battery but their entire iPhone was witheld and replaced. Then you had users with 'Fine' but recalled new 6S- samesymptoms, and Apple Support replaced and solved it. Then you also had 'Fine' with shutdowns, with recall, whom Genius Bar has not replaced. You make out of this reading whatever you wish.

Assuming you tried resets, clean state iOS, genius and Sr level support, and none of it worked, including none of the six iOS 10 versions, and you still loose so fast, chances are that your battery or your phone are affected. At that point, as the examples above, the '100 %' health is meaningless. Genius Bar will keep your phone overnight and not just hand it back with such dreadful figures...

Then you have Malanthius, whom is technically an amateur, giving terrible advice, and blaming but yet to solve it for anyone. We are nearing twenty resolutions here.

"So dumb always thinking its the battery". What is dumb is blaming something without facts, or inventing facts, ignoring evidence for every single person whom resolved it. Or blanket smoke such as "It's obviously an iOS.." Only obvious thing, is that an user whom has successfully resolved here, case by case, with battery, firmware, or phone swap, it is only obvious in their case- battery, firmware, or phone. Welcome to use your anecdotal figures to start fighting it with those whom 10.2.1 provides no resolution, such as just confirmed earlier.