IOS 11.4.1 Terrible battery drain

I was on ios 11.3 and updated to iOS IOS 11.4.1 which shocked me with severe battery drain. I’d say iOS 11.3 served better battery consumption. Please, Apple, do something to iOS IOS 11.4.1 to prevent battery drain. My device is iPad mini 2 with retina display.

null-OTHER, iOS 11.4.1, IPad mini 2 retina cellular and wif

Posted on Jul 11, 2018 4:25 AM

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Posted on Sep 26, 2018 9:32 AM

I had the same issue in iOS 11 for iPhone and iPad (iPad was worse). Calendar app was the culprit. Calendar on iPhone and iPad was consistenty 60%-90% of battery usage. What solved it for me was: removing (turning off) and adding back (turning back on) calendars for iCloud, outlook, gmail, yahoo (I have about 6 I sync with). I removed and then added back Icals that I subscribed to. Then turning all to Fetch except for iCloud - I kept that as Push. Then setting Fetch to automatic. Powered off and then back on. This worked in iOS 11 and 12. No more abnormal battery usage. I can’t say exactly which portion of that process solved the issue, but I’m back to normal now. Good luck.

112 replies

Aug 5, 2018 4:28 PM in response to bryandietrich

I experienced the crazy battery drain as well but I figured out a solution that worked for me at least. Currently when I check my standby time and my usage time they are always the same so that means the phone is never really in standby. It is always in usage and my battery drains really fast. What I did to fix it was that I plug in my phone at night before bed and in the morning it is at 100% charge. I then unplug the phone and immediately turn it off and then back on. Once it turns back on I plug it back in for a few seconds so that the battery usage monitor registers that the battery is full. This way I can watch the standby and usage again. I watch my stats throughout the day and everything is back to normal. Give it a try.

Aug 5, 2018 4:30 PM in response to marvinfrompasig

I experienced the crazy battery drain as well but I figured out a solution that worked for me at least. Currently when I check my standby time and my usage time they are always the same so that means the phone is never really in standby. It is always in usage and my battery drains really fast. What I did to fix it was that I plug in my phone at night before bed and in the morning it is at 100% charge. I then unplug the phone and immediately turn it off and then back on. Once it turns back on I plug it back in for a few seconds so that the battery usage monitor registers that the battery is full. This way I can watch the standby and usage again. I watch my stats throughout the day and everything is back to normal. Give it a try.

Aug 6, 2018 11:18 AM in response to mike_diachenko

Ditto. Battery dropping 1-2 percent a minute, with cell off, wifi off, BT off [While on the charger and showing green battery icon]. No background apps running. I rebooted the phone multiple times, still tanking incredibly fast.


Charging will not keep up with the battery drop rate. No background refresh turned on.

Battery App says battery rating is 90%. I replaced it 2 months ago.


Apple, WHEN ARE YOU GOING TO FIX THIS POS IOS???????????????


Stop patting yourself on the back for company net worth and fix this crap!!!!!!!!!!!!

Aug 13, 2018 6:19 PM in response to Farghalalimabrouk

Can someone help me, please :’(

i think my case is the worst

My battery was fine before update, but now the battery drop from 100% to 10% in 2 hours with flight mode on, for the past few days my device suddenly shut down everytime the battery reach 55% and when it turn on the battery will be 10%, now i can’t really use my iphone 6 plus :( Sorry for my bad english

Sep 4, 2018 1:17 AM in response to Farghalalimabrouk

I went to official Apple support. They did online test for my 7+ running 11.4.1

Hardware is Ok. But some problems with software. Staff said they cannot recognize is it iOS itself or 3d-party app.

So. I restored the phone to clean 11.4.1 and went to service again and made test again (just clean os without any 3d-party apps). Same result as above.

It is fault of iOS. Apple will not do any update for 11 any more. For them there is just one OS - 12.

Lets protest!

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IOS 11.4.1 Terrible battery drain

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