iOS 11.4 Battery Drain!

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

Posted on Jun 3, 2018 3:46 AM

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Posted on Jun 14, 2018 6:34 AM

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.

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109 replies

Jun 13, 2018 1:07 PM in response to UHERE

Same here. iPhone 6s. I changed my wifi connection to 2Gz from 5 Gz and that has stopped the need for continual charging every few hours. However, my sites load really, really slow--so not much of a fix. I had done a hard reset on my ipod touch 6th generation and that did not fix the problem, only caused more headaches.


Battery health is fine on all devices. I have not update my ipad and am not going to after this mess.


APPLE: TIME TO PUT OUT A FIX!!! EXTREMELY FRUSTRATING. NEXT PHONE WILL NOT BE AN IPHONE.

Jun 26, 2018 3:22 AM in response to jessraber

Since Apple stopped signing 11.3.1 previous version of software, it is no longer possible to downgrade. There is a small time frame that previous versions of software are available after the introduction of new software. Instructions and links to available previous software versions can be found by doing searches on the web on how to downgrade software. Several independent non-Apple sponsored techie sites are very helpful.

Jul 5, 2018 2:12 PM in response to Android_Contemplation

I do believe we had almost the EXACT conversation. The only difference was mine went from 85% last week before the intall of their update, to 50%. And of the 5 different “advisors” and “senior advisors” I spoke with, they all said the exact same thing. It’s my battery being “significantly degraded”. And so I’m SUPPOSED to go to the Apple store at 5:40 tonight to get a new one. They caused this and the only way to fix it is to pay for a new battery. This is crazy.

Apple also removed my post because it wasn’t “helpful”.

Jul 6, 2018 7:55 AM in response to Adityauddandam

I have tried every solution on here and things I found on the internet and nothing has worked. A new battery didn't solve anything. I went to the Apple store and they reset to factory condition and all that did was reinstall os11.4 with the same problem. Apple stopped signing 11.3 so there is no way to downgrade from 11.4. At home I have to keep the phone plugged into the charger and in the car make sure I have a charger with me. Very disappointed in Apple. Apple should realize they have a problem when people from the UK are posting on the internet with the same problem. It isn't just in the U.S.

Jul 8, 2018 6:06 PM in response to pjir96

This is not the issue. It is iOS 11.4. My phone was working flawless on 11.3.1. Now I can literally watch my battery percentage go down. Lost 40 percent in an hour. It appears to be a WiFi related issue as it drains normal when WiFi is off. Hello Apple are you there? Are we not loud enough for you to hear? Get off your pedestal and do something. You claim to be the best in the industry. Prove it!

Jun 11, 2018 2:56 PM in response to WLW7734

Ah.. well that’s annoying, ever since I updated to iOS 11.4 about 2-3 days ago my battery has been draining significantly like it goes from 90% to 40% in the space of like 2-3 hours when not in use and was on airplane mode to avoid the battery going down and it’s driving bf me crazy to be honest, it’s a shame that they stopped allowing going back to iOS 11.3.1

Jun 14, 2018 12:47 PM in response to MarkK...ski

This battery drain problem also extends to my iPad Mini four. Maybe Apple will take the issue seriously when reminded that these devices are approved by the FAA and used as a paperless cockpit. What happens when the device can no longer perform the length of the flight? Apple has created a situation where the device no longer performs as they advertise.

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iOS 11.4 Battery Drain!

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