iOS 11 draining battery...

One step that can ultimately tell if your issue is your actual battery or software is to back everything up to iTunes/iCloud and restore to factory settings using iTunes.

If you restore using iTunes (more specifically iTunes on a computer, not going to Settings > General > Reset), it takes the entirety of your software off the phone and puts a "fresh" copy on. You can then set up the phone as new and sign into iCloud or add your internet accounts to get your contacts etc. back.

If your battery is fine after that then you know that your software was causing the battery drain.

You can call AppleCare and ask them to run a battery diagnostics and don't be surprised when they tell you your battery is fine, because most likely software is causing your battery drain.

I can confirm this works because I had the same issue and tested this per advice from an Applecare advisor and turns out this was true. The last time I backed up my phone was months ago so it was nobody's fault but mine for not backing up information that I needed.

Hope this clarifies things!

Have you tried a reset?

iOS Reset -

With an iPhone 6S and lower, press & hold the Power and Home buttons simultaneously, ignoring the red power off slider, until the Apple logo appears. Then release both buttons. This should not affect any content on the device, it is similar to rebooting your computer. With an iPhone 7, press & hold the Power and the Volume Down buttons.

I went into my settings, battery & waited until Battery Usage at the bottom of the page loaded up. It showed Siri had been using 44% of my battery & I don't even use it, so I turned Siri off & problem solved.

I just thought I'd post an update to my situation, after trying the solutions posted here which didn't resolve my draining battery issue. I ended up reaching out to Apple support online and they ran an diagnostic analysis and said my battery was actually bad and needed to be replaced. So I really didn't have much choice if I want a functional and productive phone, but to replace it. I took it to the store, and they ran the diagnostic to confirm, and it cost $86, so now the charge holds like a new phone would. My phone was a 6 so about 3 yrs old. The Genius bar person that helped me said that it would be about how long the battery would last you if you don't let your battery drain all the way before re-charging. Apparently charging your phone at 50% to a full charge really only means you are getting 50% charge not a full. That over time the recharging becomes less effective as well as performance. The update to the latest iOS was not a cause to my already bad battery. The update was a coincidence and may have refreshed and triggered the quick draining of the battery, that would of eventually started to. I don't know that I really believed or liked the explanation they gave me, considering I am among many who have the same problem after the iOS update, but it is what it is.

Hi,

I use iphone 6 and exactly I had the same problem once upgraded to ios 11.

I was very much irritated and contacted apple, and this solution was provided.

This works perfectly for me, you can also try. The battery consumption has reduced a lot.

factory reset using itunes, all your content would be erased, so back up before doing so.

The link is appended

Restore your iPhone, iPad, or iPod to factory settings - Apple Support

thanks

Dear

Please back up your phone using iTunes and do a factory reset using iTunes.

Also if you are a iOS 11 beta tester please remove the iOS beta tester profile under settings>general>profile>iOS beta tester.

This helped me to improve battery life as well the phone performs as if it runs on iOS 10.

Hope this would solve your issue.

I had the same problem on my iPhone 6. I tried all the resets and limiting background apps Didn’t make a difference. finally replaced my battery as a last resort. Since the battery has been replaced my iPhone 6 is like new! You can read news stories about Apple slowing phones down when battery is older but they didn’t tell anyone!

Long time Apple customer but had enough after this bs move. Pay $1150 for a phone that last 2 years?? No thanks! switching to android for next phone. PS replacing the battery yourself is a pain unless you want to pay Apple 80 more dollars for a 25 dollar battery.

I had the exact same issue with my girlfriends iPhone 6. Battery drain skyrocketed after the iOS 11 update. It took ages to find a decent solution that didn't involve a reset (which doesn't work by the way)

https://www.downloadsource.net/how-to-fix-ios-11-increased-battery-usage/n/10475 /

About the best information, I have found so far. It hasn't got it back to 100% but its close.

Let me know if it works for you 🙂

Something that has helped battery issues in the past, is to backup the phone, restore the phone to the factory settings and then restore the phone to the backup.

Mine is not draining like all 6plus. I turn off Background App Refresh. See if that works!

Turn off bluetooth. That drains a battery fast. It's a start.

Reset did not work for my iPhone 6. Nor did restore.

I did find that changing some settings like turning background app refresh, seemed to help

Hi,

after reseting twice... and switching off many times, my iPhone 6s is still draining the batt.

After resetting or after rebooting it shows 60% batt and after 10 seconds it start showing 59%... 58%... until 55% only in 10 seconds. Without having any app running in the background, only viewing the springboard.

In iOS 10.3.3. using the mobile normally it last for almost 6:30 hours of screen time. Now it can't reach 3 hours.

It seems like the iphone is calculating something in the background... the apps are running a little bit slower when launching them they make some kind of jump or bulky running. The os is telling me that i have new memories and new people found in pictures... but its been 4 days since i upgraded to ios 11, i thought that it would be 1 day of reindexing things and pictures. Could be the reindexing of almost 10.000 pictures the reason of this batt draining? i know my pictures are not a great deal but... i don't want to erase them yet... 😝

i hope Apple'll find a solution as soon as possible.

Thanks

Same issue here, iPhone 6S Plus 128GB. Main repeated offender is when updating apps, I have seen 12% to 14% drain in 3 or 4 minutes updating 10 or 12 apps (800 MB to 1 GB). It happens every single time. Most intriguing is that in Battery info in Preferences the App Store doesn't even show as consuming much battery, I just updated 5 apps, lost 5% and App store use shows as 2% in the last 24hs. I haven't figured out if it is related to heavy read/write use or heavy wifi use that drains the battery so aggressively. The phones heats up a lot while updating apps, of course I mean much more than regular heating, and heats very quickly on the top right, so it's as if the updated daemon was running at 100% the whole time, and not only the processor was taxed but the read/write IO as well, I haven't seen battery drain this fast before even when using processor intensive tasks so it seems like a multi drain situation. It has happened in an exactly identical way just taking and looking at photos, 2 days ago I took some 10 pics in 3 or 4 mins, checked them in Photos app, edited only one for added saturation, a 1 minute edit job, by then I had lost around 30% battery. Of course the phone was probably trying to upload those photos too so again: processor + read/write + wifi?!? I've seen drain from 100% to 40% before I leave home, in around 1 hr time with only 10 minutes screen time. I have seen 5% to 7% drain only by opening Waze and choosing a destination, by the time it routes bam, lost that amount. And no need to say the phone was working just fine before iOS 11.

That's my diagnosis if it is of any help to someone, no solution, crossing fingers for a iOS update that silently solves this, soon!

Hi,

i updated my 6s to 11.0.2 also and after using it normally -not much- it still drains the batt.

Yesterday I disabled the background app refresh... and also email push configuration... i open the email app manually to see if there is any new email. i fill the batt during the night untill 8am... But even so, the battery lasts less than iOS 10.3.3. And now we're trapped in iOS 11.0.2. because the downgrade is not possible...

I've screencaptured the draining moment. At 11:26am it was less than 20 minutes of screen use -really hard working day ;-) - In less than 20 minutes of screen use, it drains from 100% to 88%... and in 3 minutes it goes from 93% to 88%... i was only using whatsapp through wifi.

In iOS 10.3.3. my 6s lasts 6h30´ of screen time using normally. And now ( 9pm) im 2h39´ and im 30% remaining. I think about 2 hours less than previous version of iOS.

i regret upgrading to iOS 11 😢

p.s. i edit... and as you see in the picture... 11:26 it drains 3% in a minute without running apps in the background.