Why and how do I fix the new issue with battery drain after updating to iOS 11.4? Before updating, might loose as much as 10% overnight on my 6s. After update it now drains completely from 100% over the course of the night to the point that it won’t start until I plug it in and let it charge a bit. iPad air2 drains much more as well, but not to the same extreme.
iPhone 6s, iOS 11.4
my 6s was having the severe battery drain after installing 11.4. Had to charge every 6 hrs with moderate use. blocking my home wifi to the 5g band helped a bunch, was back to near normal. I did a Network Settings reset and afterwards the 5g connection worked much better as far as near normal battery drain. 2 days ago i rejoined the Apple Beta iOS tester group to be able to download and install Public Beta 2 of iOS 11.4.1. Having run that for 1.5 days now, I can say my phone is back to normal. Yesterday i had 19 hours of standby and 3.75 hrs of usage and was still at 45% when i went to bed.
Beta firmware has its potential downfalls, so only choose this if understood. My phone is not a critical or business related device so was able to do this for my situation without fear.
iPhone 6s with 11.4 and later 11.4.1, same issue that’s discussed here. Battery draining about 3-4x faster than prior to either update. Turning off WiFi seems to be a temporary fix. Phone runs very hot, too. Have rebooted phone multiple times, although not the hard reboot suggested here so I will try Home button + power and see if that works.
It’s still is fixed. Like a said a hard restart where you press and hold the home button and power button at the same time. Good luck
restart iphone and then recharge battery till 100%.
Same problem on an iPhone6. Solved by backing up on iTunes and restoring!
Only backup and restore. No reset at all. This worked for me.
I had the same battery drain problem and notified Apple CS within 2 days of 11.4 release. Apple CS states they had no battery problem reports with 11.4 Managed to downgrade to11.3.1 before Apple quit signing that version, thankfully. Called Apple CS and informed them of the battery life difference between 11.4 & 11.3.1 Also was able to eliminate persistent Apple update notices by installing an app to lock into 11.3.1 No more updates for me Apple, thank you
Here are two links to useful information:
1.) http://gizmostorm.com/how-to-turn-off-ios-update-notification/
The first is how to turn off Apple update notifications and forced download ( for next time when you get a working phone and want to keep it that way). The second link is a list of iOS downgrade data links that may or may not work for reverting back to 11.3.1. However, due to Apple allegedly quit signing the data used to revert back to 11.3.1 those rollback links may not function. I used those links and the information to roll back my SE due to battery problems shortly after 11.4 was released. Good luck.
Chatted with apple support over this...at first the advisor claimed she didn't hear about the battery drain problem with the ios 11.4 update and suggested i browsed over topics about batteries on the site. I told her no thanks and insisted they give me more concrete fix. I was then transferred to a senior advisor, who at least admitted this isn't a hardware issue. He told me to restore the phone and suggested maybe the initial 11.4 download was corrupted previously. And so i restored the phone for the third time and still the battery drains when idling. Terribly disappointed.
I now turn off wifi, location, cellular settings and etc and converted it into a dumb phone, to preserve the battery when not in use. Never been more frustrated with a phone.
if they have replaced the battry also u will get the same problem, its not the problem of the device its the problem of the update.
spend a couple of hours and down grade your software to 11.3 or 11.2.
Hi battery was running low I reset the phone IPhone 7 Plus now it seems to be back to normal the batterie lasting a couple of days rather than hours only thing is why does the battery use more on home screen lock haven’t noticed this befor !
Yes I’ve tried hard resets on all our devices but to no avail. Followed every “sollution’ In the end only downgrading solves the issue. Thanks
I don’t know then. WiFi off has helped me. Hope a fix come soon. It’s frustrating that Apple hasn’t acknowledged it though.
Hello,
At my iPhone 6s, I confirm that the issue with battery drain due to wifi is resolved using iOS 11.4.1
Yes, Apple stopped signing 11.3.1 a few days ago. They screwed a lot of people by not issuing a fix before stopping a restore path. I’m so glad I was able to go back to 11.3.1. My phone has been working great after the restore to 11.3.1. Just not sure what the future holds now...
iOS 11.4 Battery Drain!
