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I've got enough of 11.4 battery drain and installed 11.3.1. My battery is great again.
 
My 6s has the problem as many are having. Battery capacity is at 87%, Coconut Battery tells me less than 400 cycles. Prior to 11.4 update I could charge the phone before bed, have it at 100% and then 8 hours later it would be at 97%. Consistently.

After the update it runs down to 25% or less overnight. Nothing going on app-wise, all standby time with perhaps 1 or two minutes of app activity.

Tried hard reset, etc. etc. etc.

What is temporarily working: totally disabling Location Services.

Then battery performance is as it was before the 11.4 update.

Uesterday phone was at 100%. End of day (light use mostly) it was at 67%. Did another hard reset just for fun.

Turned Location Services back on.

I watched the battery percentage drop 1% every 10 seconds. Those are not typos. Now if the iPhone was actually burning through that much energy in so short a time it would be at least very warm. Isn't at all.

Could the 11.4 update have messed with the battery software especially the calibration software? And why is it, in my phone, tied to whether Location Services are enabled? Total mystery to me right now. And a very inconvenient one, too.
 
Could the 11.4 update have messed with the battery software especially the calibration software? And why is it, in my phone, tied to whether Location Services are enabled? Total mystery to me right now. And a very inconvenient one, too.
It's possible that the 11.4 broke some application and that application is using the location services more than it needs to. You could try to disable access to location services app by app and see which one is the one using it constantly. That same page where you can do that you also see which apps have used location services recently and which are using it right now.
 
Hey,
Here are the two temporary fixes I saw on the Apple forums :
1 - Go to Settings and disable WiFi. iOS 11.4 seems to have trouble with old hardware. (it worked for me)
2 - Go to Settings and disable location services (it worked for several users)
What sort of trouble with older hardware, and how is it related to WiFi?
 
It's possible that the 11.4 broke some application and that application is using the location services more than it needs to. You could try to disable access to location services app by app and see which one is the one using it constantly. That same page where you can do that you also see which apps have used location services recently and which are using it right now.

I guess not, because I made a clean install after the normal update installation of 11.4 caused the draining issues on my 6s. Also the clean install delivered an alarming battery drain. Only the downgrade to 11.3.1 worked fine for me. Therefore I don't think it's a broken application. It looks more like a major flaw in the firmware.
 
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Having the same issues here with my 6s. 100% charge when I go to bed and completely flat battery when I wake up. Battery drain during the day seems normal. Wonder if it could have something to do with night shift, will try turning that off tonight to see if that makes any difference.

I am facing the same issue? Did changing 'night shift' made any difference?
 
Hey,
Here are the two temporary fixes I saw on the Apple forums :
1 - Go to Settings and disable WiFi. iOS 11.4 seems to have trouble with old hardware. (it worked for me)
2 - Go to Settings and disable location services (it worked for several users)

I live in a cell service dead zone so sadly disabling wifi would turn my phone into a brick. However I have just disabled location services, so we shall see.
 
I've got enough of 11.4 battery drain and installed 11.3.1. My battery is great again.

I tried this but my only backup was on 11.4 so I couldn't use my backup after downgrading. Couldn't bear to start over from scratch so had to move back to 11.4.

My 6s has the problem as many are having. Battery capacity is at 87%, Coconut Battery tells me less than 400 cycles. Prior to 11.4 update I could charge the phone before bed, have it at 100% and then 8 hours later it would be at 97%. Consistently.

After the update it runs down to 25% or less overnight. Nothing going on app-wise, all standby time with perhaps 1 or two minutes of app activity.

Tried hard reset, etc. etc. etc.

What is temporarily working: totally disabling Location Services.

Then battery performance is as it was before the 11.4 update.

Uesterday phone was at 100%. End of day (light use mostly) it was at 67%. Did another hard reset just for fun.

Turned Location Services back on.

I watched the battery percentage drop 1% every 10 seconds. Those are not typos. Now if the iPhone was actually burning through that much energy in so short a time it would be at least very warm. Isn't at all.

Could the 11.4 update have messed with the battery software especially the calibration software? And why is it, in my phone, tied to whether Location Services are enabled? Total mystery to me right now. And a very inconvenient one, too.

Very interesting. I've just disabled my location services completely so we shall see. It is possible that the culprit using the location services is not an app, but a system service? If I look at my location services settings, none of the apps appear to have recently used my location. System services, however, show many frequent location uses, and it's possible that if a system service is using your location the GPS icon might not be shown on the status bar.
 
I installed the update iOS 11.4 and now my battery is draining at an alarming rate. I did not have these issues before this update.

Please fix this issue as I have read others having the same problem.

I have an iphone 6.

This is so very irritating.

Sherry Goff
[doublepost=1528219247][/doublepost]I am having the same issue with my iPhone X, the battery life before 11.4 was fantastic... after I updates it drains extremely fast. I updated the second it was released so I don’t believe it could still be indexing. It’s very frustrating... We got our X’s on Jan 1st and not once has the low battery alert come up until after I updated and has every day since!
 
What is temporarily working: totally disabling Location Services.

Yes. This is working for me as well on my iphone 6. I tried reboot and various other things, but the ONLY thing that seems to help (for me) is disabling Location Services. (I updated last week, so at least 4 days ago, so I doubt it is still reindexing all this time later.) Of course turning off Location Services was a bit of a pain when I needed to use Google Maps while driving . . . during a 30 minute drive with the phone plugged into my car charger I STILL lost 20% charge with the Location Services on for navigation. As soon as I reached my location I turned them off again and the problem stopped and the phone was able to charge. Unfortunately without Location Services I was having trouble getting a decent signal (perhaps an additional problem?).

Very annoying problem, but misery loves miserable company . . . so many thanks to everyone for posting their experiences.
 
6S user here. Battery drain is ridiculous on 11.4. Need location services activated. Hoping they get this sorted out ASAP.
 
I finally got the rollback to keep my data and so ended up rolling back after all. However, I did try the location service disabling trick and it seems to have made a massive difference. If rolling back to 11.3.1 is something you're willing or able to try it may be worth it but if not disabling location services will make a massive difference while we all suffer and wait for this to be sorted out properly.
 
I enabled HotSpot on 6s+ and 15min later I lost 4% battery life, while surfing the web on iPad that tethered to iPhone.

I was hoping there would be a simple issue that I could resolve, but it seems to be deep in the iOS it self.
 
SE dropping fast on 11.4 as well. And sure enough, I came here to find I'm not the only one.
 
My 8plus seems like its also getting hit a bit. Im just gaging by my daily activity and charging times through the year, 8plus % is lower at point of day compared to 11.3.

I have an 8plus and I have seen the same fast battery drain overnight (7%) with phone switched ON but in aircraft mode. Never seen a similar rate beforehand (not more than 3% with previous s/w) and the battery health is estimated at 98% by the ios gauge.
Quite weird........
 
Had the same problems on my iPhone 6S with battery health at 97%. Battery would drop before my eyes. Finally reverted to 11.3.1.

I don't use location services very much - most system ones are off and apps are set to only 'while using'.

I did notice battery usage by mail was much higher than normal.

Is it possible that exchange email with push is a culprit?

I do have two email accounts - one Exchange, one Outlook.com that are set up with push.
 
Battery life was hideous on 11.4 even just had a new battery and I could watch it go down. Installed PB 11.4.1 and seems fixed right now although it's a bit early.
 
Got an iPhone 7 plus that I updated from 11.2.1 to 11.4 and instantly noticed the battery was draining much quicker. Left it for a few days but it didn't get any better so I downgraded to 11.3.1 and now battery life is fine again.
 
I enabled HotSpot on 6s+ and 15min later I lost 4% battery life, while surfing the web on iPad that tethered to iPhone.

I was hoping there would be a simple issue that I could resolve, but it seems to be deep in the iOS it self.
4% l’ost in 15 min when in hotspot seems normal to me. Hotspot has always drained battery relatively fast
 
iPhone 5S, Verizon, 16gb, 8 of which is empty, with what I consider is a flaky battery:

87 percent health both on 11.3.1 and 11.4. Battery life has constantly improved as I've moved from 11.2 through the various updates to 11.4

I do need to try some downloads/installs of apps while on out on the trail, because that is what I noticed really killed my battery last fall after I first upgraded from 10.x to 11.x

Anyhow, no perceived change in battery life after the upgrade to 11.4

Posting in this thread because I've been thinking of replacing this 5S with an SE and am keen to see what happens ITLR with all y'alls SEs...
 
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...Very annoying problem, but misery loves miserable company . . . so many thanks to everyone for posting their experiences.

Indeed it does. And add my thanks to everyone who has taken the time to report what's going on with their iPhones. It really is nice to know in a weird way that one is not alone.
 
I've noticed the battery on my 6s drains faster since going from 11.3 to 11.4. The battery health is 96%
 
Hmm... i just got a new SE yesterday and i thought the battery drained to nothing overnight because i forgot to calibrate it (letting it go to 0% and to 100%) instead i just plugged it right away and started using it. My battery health is at 100% since its new and it doesn't heat up for no good reason so i guess its a 11.4 issue. Oh well. On my iPhone 7 and iPad Pro 10.5 i haven't had any issues with 11.4
 
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