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Question: iOS 11.4 and iPhone 6s Battery is Horrible

Ever since I updated to iOS 11.4, the battery life on my iPhone 6s has been horrible. with iOS 11.3.x on a light day, my battery level would be at about 90% at noon. Over the past two days, which were light usage, my batter level at noon was about 70%. I've rebooted my phone and it did not make a difference. At 8:00 this evening my batter was down to 13%.


The only change is that I made is that I switched to iCloud Messages. I did that on my iPad Air 2 as well but the battery life on that is fine.


Battery Health reports that my battery is at 99% capacity.

Does anyone else have horrible battery life on an iPhone 6s?


I have reported this to Apple via Feedback - iPhone - Apple.


Thanks,


Mike

iPhone 6s, iOS 11.4, null

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Jun 3, 2018 9:48 AM in response to ujwalfromhillsboro In response to ujwalfromhillsboro

I chatted with Apple support on this and I was told that my battery needs to be replaced. My battery is less than 9 months old. The know nothing about this problem.


I then went back to 11.3.1 and my battery life is great again.


I hope that this is fixed in 11.4.1.


be sure to report this to Apple.


Mike

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Question marked as Helpful

Jun 3, 2018 9:48 AM in response to ujwalfromhillsboro In response to ujwalfromhillsboro

I chatted with Apple support on this and I was told that my battery needs to be replaced. My battery is less than 9 months old. The know nothing about this problem.


I then went back to 11.3.1 and my battery life is great again.


I hope that this is fixed in 11.4.1.


be sure to report this to Apple.


Mike

Jun 3, 2018 9:48 AM

Reply Helpful (5)

Jun 4, 2018 9:24 AM in response to MikeMcCollister In response to MikeMcCollister

I noticed the same with my 6. But I think the iPhone has lots of activities after the upgrade to 11.4. So after twice using and charging the problem was gone without any further measures. In the german forum you can read: switch off LTE for some days. That should help as well.

Jun 4, 2018 9:24 AM

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Jun 4, 2018 9:41 AM in response to ervau In response to ervau

I understand that after an upgrade there will potentially be some re-indexing but for at least 2.5 days? I did not have this problem with my iPad Air 2. Something is seriously wrong with this version on the iPhone 6s.


Mike

Jun 4, 2018 9:41 AM

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Jun 4, 2018 10:46 AM in response to MikeMcCollister In response to MikeMcCollister

Apple replaced my battery on Sunday, at the reduced price of $29.00. I don't believe this fixed the issue. My 6s was at 100% this morning, currently at 31% with on 38 minutes usage, almost 7 hours on standby. How did you get back to 11.3.1, I want to do that to see if it fixes the battery drain.

Jun 4, 2018 10:46 AM

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Question: iOS 11.4 and iPhone 6s Battery is Horrible