iOS 11.4 battery drain

Hi all !!

I have replaced the battery of my 6s yesterday in a Apple Service Store ... and the problem persists.

Before upgrading to 11.4 ... I had almost 1 and half day with battery ... and after upgrade I was getting 5 hours maximum.

After all tests and all efforts done I have accepted to replace battery as a last chance and to prove to apple support that the problem was not in the battery ... but in the operating system. After battery replacement yesterday ... I get 8 to 9 hours of availability. This is a crazy situation. And I don't understand how they can't see that when they replace the battery ... phone was there for around 5 hours ... they should see the battery draining while the phone was there (and it was very hot when I got it from them). Don't replace the battery, don't spend $29€ on it ... as the problem is not there.

This is a very bad and sad situation with Apple !!!!

This is a total disaster. My both devices iPhone SE and iPad 2018 started to malfunction after ios 11.4: battery draining, apps worked randomly. Full resetting, pure installation > some app problems disappeared but not all. Ios 11.4.1 was little better lately but still random problems. Battery draining was not so bad as earlier. But can’t compare to ios 11.3.3, everything worked so well and battery lasted much better.

Everything started from the beginning again with ios 12. It has been about one and a half week in my devices. Battery draining is quite bad and almost every app has random behavior: sometimes app doesn’t open or it freezes.

And it’s fifth month with this s h i t already!! So bad Apple!

I was lucky that 11.4.1 and 12 fixed the problem for me on my SE. I have 2 SE for use with SIM from different countries (I have not mentioned this before). I upgraded to 11.4.1 and got the drain problem on both phones. I tried disabling the between phone features on both and all the other settings in this thread but only low power and airplane modes helped. I tried the pre release for the new version on 1 phone and this helped. The other phone still had the problem but then after a few weeks it went away by magic. I went to 11.4.1 on both phones and the problem stayed away. I am on 12 on both now with no problems. I can’t explain why 1 phone fixed itself. I have multiple apple devices including MacBook, iPad an iPhone so maybe it is icloud and (are there any other) sharing features that was the problem on the phone. I used a shared photos library last week to get some photos on to my phone and saw above heavy battery drain on the iPhones. In normal use I am happy now.

so after struggling for about two months, I went to best buy after installing ios 12 , and they said device is not powering up, they tried 3 batteries.

then I went to Apple store and they told the same thing, because new batteries are incompatible with iphone 6s hardware, so Apple gave new iphone 6s (64 gb) for $30 🙂🙂

Hi ! Lucky guy ! I am dealing with Apple support almost everyday, doing tests and more tests ... diagnostics and more diagnostics ... new battery ... and the problem persists even being in the IOS 12 version ! Battery is draining ... and with no use of the phone the battery is lasting for 8 hours only. I am sick of this !

This seems very random. I have my Iphone 6 ... and new battery installed 1 week ago by Apple suggestion is lasting 8 works with no action on the phone. Same problem, same **** as the first day I have moved to 11.4 !!

This is incredible. And I am still waiting for Apple Engeniering team to give feedback to supporter in order to solve my problem. Unbelievable !

I read somewhere that a sequense of disabling and enabling various settings (4-5 different settings) would improve battery performance. I did try this on my old iPhone 6, and for sure it worked fine - significant improvement.

However, I did not remember where I found the description - do anyone else know? I have been asked to do the same for another iPhone 6, but cannot find the description.

Hi ! We should not look for a workaround ... and for small improvements.

We should get a full recovey of the battery life after 100% of charging.

I only get 7 hours of battery ... and before upgrade to 14.1 ... I had 1 and half days using the battery with no need to charge it.

This is bad Apple issue !

ios 12.01

Nothing but problems after ios 11.4! I have iPad 2018 and iPhone SE and both have had many issues during the last 5 months. Battery draining is worse again with the new ios. Most of the apps don’t work properly. They don’t open or sometimes they open after many tries. Every time when an app doesn’t open the phone starts to warm up and the battery goes down faster. Most of Apple’s own apps work ok but Safari sometimes freezes. For example I shut down my phone today and removed and installed again the app ”Polar Beat”. It started once after it and second time only ”black screen”. (iPad has same issues but I can’t notice warming up.) iPhone doesn’t find SIM card in spite of the right PIN code sometimes. I have to try few times.

I can’t understand what happened to ios after 11.3.3. Everything worked so well with it. My wife has an iPad air 2 with ios 11.3.3 and it’s more than ok! I was so annoyed in June when problems started but nowadays I’m surprised if something even works. APPLE take some responsibility for your products!!

Thank you for your help. Same problem here with a 6S Plus. I'm loosing 60% per night with no push mail, no location service, no background apps, power saving mode on, airplane mode on etc.

You should try to turn the WiFi off (via the Settings app). It worked for me on iOS 11.4 : 10% battery lost per hour with WiFi on vs 1% with WiFi turned off.

To my knowledge this hasn't been revised to exclude the 6 Plus, in fact the list for the forthcoming iOS 12 is identical so Apple clearly believe it still has some "life" left in it.

In addition to my previous comments, there is no correlation of the problem between our SE and 6s:

I’m not sure if the update applies to half of the users but ever since upgrading to ios 11.4.1 the battery performance is better

Currently on ios 11.4.1 iPhone 7+

Zide99,

My IP 6 has been having battery issues since IOS 11. I replaced my battery on 26 Jan 2018 and now mid July 2018, it’s almost dead again. Below is the proof. I feel your pain.