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.

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IOS 11.4.1 Terrible battery drain

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