iOS 11.4 battery drain

iPhone 6s Plus, experiencing severe battery drain for almost a week now, have turned everything off I could possibly think of and then some I researched and heard about on this forum. Still drains the battery...

AND now...with 100% battery indicator after being charged all night, I open any app and with in 2-5 min the app appears sluggish, touch screen becomes nonresponsI’ve and the iOS 11.4 shuts the phone down showing the white Apple icon. The phone then attempts to reboot but gets stuck in a reboot loop. The only thing that permits the phone to be able to reboot is if I plug it into the wall charger or external battery source.

FUBAR!

I had apple in a chat today. the support seems to heard about the issue the first time. unbelievable that there is no official announcement. Any other form would have offered a rollback to previous version.

I have the feeling in the office the batterie is drained faster

than at home.

at home I use 2.4 GHz

at work 5 GHz is likely

I switched on batterie saving mode

and hope the apple amateur developer will be identified soon.

can I send my electricity bill to apple?

or sue them for wasting engery and destroying

the environment?

may be that will help to reduce the time to fix

I've been having the same battery drain issue with my iPhone 6s and posted here a few days ago. A few articles I've found online say that the 11.4 update causes a glitch with some phones when connected to wifi. One site suggested going to Settings>General>Reset>Reset Network Settings. That makes the phone forget all of your wifi connections and passwords but doesn't affect anything else. I did that and my battery issue improved substantially. It wasn't back to the way it was before 11.4 but I was able to make it through the entire day without having to charge.

Today is the second day since I reset and I only made it 12 hours so it's starting to run down again. I will reset the network settings again and hopefully they'll have an update out soon for 11.4 that patches this issue.

I have the same issue with my iPhone 6s Plus. After upgrade to iOS 11.4, I have to charge more than 2 times a day. Overnight, my iPhone battery drains more than 40% @@. Always has to charge at the office which doesn't allow me to use the phone for work.

It's not possible anymore. Apple stopped signing 11.3.1.

After a few days back on 11.3.1 I can confirm, that I reach 2,5 days without charging my iPhone (I'm not a heavy user...). It is a firmware bug and not a user problem!

I have the same issue on my 6S (64Gt), but my wife’s same age 6S (16gt) is working as usual. I notised that when i turned off mobildata on my phone that the battery usage is normal? I hope that Apple give us a fast solution on this case😠

6s. iOS 11.4. Actually working pretty normal again....

what I did:

a. Rest network connections

b. Disabled Face time. .. enabled again

c. Shut down the iPhone 6s. .. Restarted

battery consumption nearly back to the level before upgrade .. 20% in the last 15 hours

(No phone calls but mail usage)

I can confirm that 5g is the source of the problem. On my Iphone SE, battery was draining like crazy at home but not at the office (5g at home and 2.4 in the office). I then disabled wifi while at home and battery draining has stopped. So I can live with wifi disabled on my phone for a couple days but I really hope Apple will do an emergency fix soon. And I just can’t turn off wifi on my ipad or it is useless.

I can confirm that 5Ghz wifi may be involved. But I don't believe its the whole story. When monitoring network traffic, it was the messages app that was causing most traffic across the wifi with a battery usage of 98% over night just by that one app. The culprit turned out to be iMessage. I have switched over to my 2.4Ghz wifi at home and turned off iMessage (I never used it in the past and it was turned off prior to this update). Now my battery is still on 75% after 30 hours of use.

I have the same issue too! I heard that many people were having this issue so I wasn’t going to but my phone updated it automatically over night and now I’m stuck. I have to charge twice a day now and I don’t use my phone often, thank you very much. It just drains so super **** fast that it’s not even funny. I lost 20% in less than 5minuets from doing absolutely nothing. I can just sit here and stare my lock screen on my phone and it still manages to lose, again from nothing. And I have noticed it just shuts down random apps when I try to open.

This is one big mess. So not happy with this new update.

Please fix this.

Same issue here with iPhone 5s. Battery is draining faster than ever before and drops easily from 80% to 70% just by opening some app. It’s weird that something can consume battery 10% just in few seconds.

Hey there,

I’m using a iPhone 6s Plus and having the identical issue.

After charging my battery I can watch how it discharges.

So for example, I charged my iPhone till 07:00am and look at it when I’m at work at 11am, it has often discharged to 45%.

And I’m not using the smartphone...

The beta-info of my battery shows me 83%...but really? I have to recharge my iPhone about 3 times a day...

And it started after I updated to 11.3 and got worse 11.4..

I will be reverting my Iphone back to the previous version. It is gobbling up my power for a reason I can't find. Took my phone off the charger before I went to bed. It was at 100 percent. 6 hours later it's down to 80 percent and all I have on is WIFI. Something is wrong with this IOS.

I am also experiencing this issue with my 6s+. A few additional details I've not seen mentioned...

I've noticed it's not nearly as bad when I have a very strong cell signal. Unfortunately, my cell signal is very weak at home and the battery drains very quickly. I used to go the whole day and just be under 50% after a 16 hour day. Now I'm below 50% in 6-8 hours.

I've also noticed bluetooth performance became very poor after the 11.4 update. Every few minutes the audio became very choppy. After some experimentation I discovered that keeping my phone in airplane mode with wifi on would decrease the frequency of this. This led me to believe the battery drain was due to the weak cell signal in my home, but after a few days I can confidently say that this battery drain also occurs on airplane mode + wifi.

One final note, before the 11.4 update, battery health showed my maximum capacity at 100%. Since the update I've noticed the capacity slowly decreasing. It is now at 97%. Is it normal to loose this much capacity this quickly? Is the bug introduced in this update damaging, or at the very least over-stressing, my battery?