iOS 11.4 battery drain

iOS 11.4 was killing my battery life on my iPhone. I re-installed it using several different methods but the battery life issue remained - finally tried iOS 12 beta 1 - works great - battery life is awesome - occasional issues with push email (email arrives when you open the mail app though) but that's a small price to pay. I put a link on my web site how to install it at https://www.VanFM.com

I'm having the same issue. Upgraded to 11.4 (on accident) and now my battery won't even last during the work day. I had to make a call this afternoon (go figure, it's a phone) and my battery life dropped from 76% down to 23% after a 30 second call. This is just ridiculous. Hopefully Apple gets an update out ASAP.

Lots of involved stuff here. I toggled the HANDOFF 'enable' to > OFF- problem solved on my 6S.

You can't go back to 11.3 either- too late. Even if possible, any backups would have been 11.4 and you 'd be back where you started.

Hope it works for some / all.

And- where is Apple Support in this fiasco? They stay silent until they can slip-in a bug fix in the software? Poor support.

Maybe the real reason is related to Cook's diatribe against trying to use iPhones to data mine. Have we all been hacked and mining is going on?

-Gary

I installed 11.4 a couple of days ago. Battery life immediately dropped from 3 days to just a few hours. There are lots of people suffering the same problem and the only temporary fix would be to roll back to the previous version - except Apple has already blocked that move.

Please Apple, sign the previous version and let us all be able to get through a day without worrying about whether the phone will still be working before we get home - or better still fix the 11.4 problem.

Sadly I think Apple will stay silent on this matter to avoid liability and hope the announcement of iOS 12 will make everyone forget the problems.

I have been using Apple products since 1992 but it is a very different company now. Faceless, despite the surface marketing image, comes to mind.

I have a 6 month old IPhone 8 and since the 11.4 iOS upgrade the phone won’t last from 8am to 5pm ... thanks for the paperweight! Apple users should have the option to rollback if the upgrade doesn’t meet satisfactory levels... this is a critical bug and should have been evaluated in the testing of all devices and software deployment. It’s not rocket science guys... you geeks earn the big money... so hurry up and release a patch to fix this soon.

Same issue here. My 6s is 2 years old and now drains completely in less than a day with very little usage. Can't be good for the battery. If the battery was good, it won't be for long.

Not sure it's worth getting Apple to replace the battery for $29 if the iOS is just going to drain it anyway.

I updated my iPhone 6 to 11.4 and my battery life has gone down 50%. The battery health has already gone down 2% since the upgrade (from 95% to 93%, meaning that it went down 5% in a year and a half and has gone down 2% in a week of having the upgrade). I hope they fix the problem before it destroys my battery. Apple blew it.

I also noticed a 3% drop from 100% to 97% in my 3 month old iPhone X in the past 2 weeks since the iOS 11.4 update. I can barely get 5 hours of usage time on it now when it was close to 9 hours prior to the upgrade 2 weeks ago. I really hope they fix this issue soon or all of us on this thread will need battery replacements sooner than the 500 complete charge cycles Apple references for peak performance capability. I am seriously considering installing the iOS 11.4.1 beta version since we can no longer roll back to the more reliable iOS 11.3 anymore.

Yes! I have an SE, I use it as a phone and some texting. Not games, music, movies, etc. I cab usually have a good amount of charge for 2 to 3 days. Now, without using the phone, having it at 100% charge at bedtime, wake up to a completely discharged phone. This is ridiculous! Wish there was a way to roll back. A phone, not being used, with cellular turned off along with WiFi assist disabled, should not be draining overnight, period.

My mini 4 is also running out of juice fast, but I use that a lot more so I monitor battery more often.

I have a iphone 6s one month old. After the ios 11.4 update my battery use at least 60 % during the night when the phone is not in use. This morning it was dead when i woke up and the phone had 65% battery when i left it last night. i always check that there is no apps running when i leave itfor the night.

using the phones alarm clock to wake up so now i cant trust the battery to last over night..... back to the old alarm clock with chiming bells.......

Yep. I had initially put it down the initial battery drain that you usually get with an update, but now well over a week, it is persisting with minimal usage. Noting what someone else said, my 3.5 yr old iPhone 6 had a "battery health" of 92% on 11.3.1 and this too has gone down to 90% following the update. I appreciate that it is not affecting all users, but clearly this is an issue and it would be good to get it addressed asap.

I have tried some of the suggested actions from this thread, to no avail.

I downloaded iOS 11.4 again from the website people have been suggested. The numbers or code next to that version seems different. It was the only one signed by Apple. I then had to start from scratch and restore it from backup. This seems to have fixed the issue. It sounds like a pain, I’m glad I did it.

I was also noticing that the majority of the drain seemed to occur at night. I turned on airplane mode last night and my battery stayed charged. Based on that, I am assuming that there is some background processes running at night that I will need to research further. I'm pretty good about not keeping too many apps open at once and closing most on a regular basis, but I will update if I figure out exactly what is happening.

Regardless, my phone usage has not changed between iOS(h!t) versions so it still seems like an upgrade issue with 11.4...

I have SE iPhone and problem started with Bluetooth pairing to car!

Battery drain overnight from 100% to zero.

I have turned off Bluetooth. Stopped drain.

Re-enable Bluetooth, turned off, sync contacts etc, disabled CarPlay, now have selected "Forget Device" from Bluetooth settings.

I only get the battery drain after using the phone in my car, charge the battery to 100%, turn charger off at night and voila, flat battery this morning again!

Something to do with Bluetooth and my car audio system. Seems to never release from the car and keep searching for it!