Looks like no one’s replied in a while. To start the conversation again, simply ask a new question.

Question:

Question: iOS 11.4 battery = disaster! Handoff is culprit?

Hi, I have iPhone 6s, my battery life has been reduced by ~50% with iOS 11.4! Without any change in my usage pattern.

My battery health is 96% (device is just 6+ months old). I used to get from 100% down to a single digit in a day+ (30-35 hours) with iOS 11.3.1, now it takes 15-16 hours! And my daily usage pattern hasn't changed a bit. It started immediately after installing 11.4 two days ago (official version, I do not install betas).

I suspect handoff between iPhone and my Mac is the main culprit. Today took my phone off the charger in the morning at 100%. After 11 hours at work and commute (no handoff there) I was at 65%-70% when I got home. After 2 hours at home, working mainly on my Mac (very little on the phone itself), I was down to 50%. After 3 more hours (again, barely touching the phone), down to 7%. What is that???!!!

I am sorry, but this is a huge FAIL. This software "upgrade" has downgraded my battery life by 50% or so. It is unacceptable. Give me back iOS 11.3.x!

iPhone 6s, iOS 11.4

Posted on

Reply
Question marked as Helpful

Jun 1, 2018 8:36 PM in response to tsipo In response to tsipo

Update: I disabled handoff on both my iPhone and my Mac, to no avail. I have come to the following conclusion: when you are where Apple decides as home, iOS 11.4 drains your battery like crazy. What they do it for I do not know, but it's outrageous.

Here are my measurements today:

  • In 9:30 hours when I was commuting (cell network only) and at work (cell data and wifi), my battery dropped from 100% to 76%. Reasonable.
  • Came back home (cell data and wifi) for 1 hour exactly, battery went down from 76% to 57%.
  • Went out for 2:30 hours, battery went down from 57% to 52%.
  • Came back home, closed ALL apps (including mail and messages) on the iPhone. in 1:30 hours battery dropped from 52% to 32%!

This says enough. When Apple identifies you are at home, they take the liberty to drain your battery even when the phone is supposed to be DOING NOTHING. Again: no apps are running, handoff is disabled on both the phone and the mac.

This is for Apple:

  1. Report to the public what the new iOS is doing all this time when the phone is not supposed to do anything!
  2. I consider returning my iPhone for a refund. I got is 6+ months ago, and then you degrade its performance by 50% (in my case) with your shiny new version of iOS. I think I have a case.

I have macs for the last 13 years or so, and iPhones for the last 6 years. I consider whether I should continue this relationship.

There’s more to the conversation

Read all replies

Page content loaded

Question marked as Helpful

Jun 1, 2018 8:36 PM in response to tsipo In response to tsipo

Update: I disabled handoff on both my iPhone and my Mac, to no avail. I have come to the following conclusion: when you are where Apple decides as home, iOS 11.4 drains your battery like crazy. What they do it for I do not know, but it's outrageous.

Here are my measurements today:

  • In 9:30 hours when I was commuting (cell network only) and at work (cell data and wifi), my battery dropped from 100% to 76%. Reasonable.
  • Came back home (cell data and wifi) for 1 hour exactly, battery went down from 76% to 57%.
  • Went out for 2:30 hours, battery went down from 57% to 52%.
  • Came back home, closed ALL apps (including mail and messages) on the iPhone. in 1:30 hours battery dropped from 52% to 32%!

This says enough. When Apple identifies you are at home, they take the liberty to drain your battery even when the phone is supposed to be DOING NOTHING. Again: no apps are running, handoff is disabled on both the phone and the mac.

This is for Apple:

  1. Report to the public what the new iOS is doing all this time when the phone is not supposed to do anything!
  2. I consider returning my iPhone for a refund. I got is 6+ months ago, and then you degrade its performance by 50% (in my case) with your shiny new version of iOS. I think I have a case.

I have macs for the last 13 years or so, and iPhones for the last 6 years. I consider whether I should continue this relationship.

Jun 1, 2018 8:36 PM

Reply Helpful (6)

Jun 2, 2018 3:31 AM in response to iengelen In response to iengelen

Small update : I did enable iCloud Messages after the update. I can imagine that needs some processing power but they should give us a warning about it than.

Not sure that's the root cause of my problems though.

Jun 2, 2018 3:31 AM

Reply Helpful

Jun 2, 2018 8:16 PM in response to tsipo In response to tsipo

This is for Apple:

You are not speaking to Apple here.


Feedback for Apple goes here >>> http://apple.com/feedback


When Apple identifies you are at home, they take the liberty to drain your battery even when the phone is supposed to be DOING NOTHING.

Did you tag your location as "home" in any app? How else would the phone know you are at home?


The only traffic would be wifi and only for apps with background app refresh enabled.


What does settings > battery tell you? What actual processes/apps were using battery?

Jun 2, 2018 8:16 PM

Reply Helpful

Jun 2, 2018 8:42 PM in response to LACAllen In response to LACAllen

I already contacted Apple support, ran a diagnostics test which brought up nothing, upon their recommendation I have performed "restore iPhone", which took a while and did not help.

When my phone is in standby mode (no app is open) and casual usage for a few minutes at home, battery drops 10%-20% an hour. When I am away from home, it drops 2%-3% an hour. How does Apple know I am home? Well, it does not take a lot of AI to deduce that the place you are every day between midnight and 6am (or a longer time around that) is home.

As I restored my iPhone, I lost all battery stats. Before that I could see the Apple Mail consumed ~40%. Really?

I do not have any heavy processes running, and for most apps background refresh is disabled.

My point is - with the same usage pattern and iOS 11.3.1, my battery life was 30-35 hours. With iOS 11.4, it's 15-16 hours. My battery health is 96%.

It is obvious that the change is in iOS 11.4, as my usage pattern is pretty much the same, every day.

Jun 2, 2018 8:42 PM

Reply Helpful (2)

Jun 2, 2018 8:56 PM in response to tsipo In response to tsipo

Well, it does not take a lot of AI to deduce that the place you are every day between midnight and 6am (or a longer time around that) is home.

iOS will not do that. You explicitly identify your "home". There is no AI that does this.


You can't manufacture a reason to be upset.


Battery health is unrelated to the iOS version. It is about charge cycles and age.


As I restored my iPhone, I lost all battery stats.

Ok, but what about now? You imply your battery life is still impacted. Have you run your phone for at least 24 hours since resetting? Then you have statistics. What do they indicate now?

Jun 2, 2018 8:56 PM

Reply Helpful

Jun 2, 2018 9:41 PM in response to LACAllen In response to LACAllen

I am not "manufacturing" a reason to be upset, I can measure and count.

Restore was earlier this afternoon, now I have stats since then:

Battery usage - Usage 1:06 hours, standby 8:22 hours. Down from 100% to 26%.

Most of this time I was at home. The 2:30 hours I wasn't (dinner outside), my battery dropped by 6% only (77%->71%).

It shows that Mail was responsible for 40% of the battery usage. Mail is one of the only apps I allow background refresh.

But the app is not relevant. There are many users out there with various iOS devices (check for example iOS 11.4 Battery Drain? | MacRumors Forums) with this issue. It's all to easy to blame the users. But I saw this week how my battery life was slashed by 50% or so just by switching to iOS 11.4, without changing my usage pattern.

Jun 2, 2018 9:41 PM

Reply Helpful

Jun 4, 2018 5:59 AM in response to tsipo In response to tsipo

Hi,


completely the same here.

Mail uses more than 50% overnight, and drains my phone from ~90% to empty, even with all apps closed, bare minimum background updates and location services.

With 11.3 no issues ast all!

And battery condition is stil reported as good.


Need to have this fixed soon, carrying spare batteries and asking for a power socket everywhere is very annoying!


Erwin

Jun 4, 2018 5:59 AM

Reply Helpful

Jun 5, 2018 6:51 AM in response to tsipo In response to tsipo

The first step to diagnose battery drain is to go to Settings>Battery to discover which app is causing the problem. With that knowledge, someone here can provide more helpful information.


Also, when updating the iOS, the phone has to re-index the files. Depending on how many there are, this can take 24-48 hours and uses a lot of power.

Jun 5, 2018 6:51 AM

Reply Helpful

Jun 7, 2018 9:00 AM in response to LACAllen In response to LACAllen

It's definitely not his battery age.. otherwise he would see more gradual changes not dependent on the iOS version. I just got a brand new SE 3 days ago and updated it to 11.4 my battery health is at 100% and the phone doesn't heat up or anything its just the standby battery drain that's so awful on 11.4 going down a full 50% overnight no matter if i even turn on lower power mode. On my other devices (iPhone 7, and iPad Pro 10.5 its been fine) It seems like the A9 devices like the SE and 6s are getting messed up by 11.4 more info from many users experiencing the same thing here 11.4 - SE - Fast Battery Drain | MacRumors Forums

Jun 7, 2018 9:00 AM

Reply Helpful
User profile for user: tsipo

Question: iOS 11.4 battery = disaster! Handoff is culprit?