iOS 11.4 battery = disaster! Handoff is culprit?

Hi, I have iPhone 6s, my battery life has been reduced by ~50% with iOS 11.4! Without any change in my usage pattern.

My battery health is 96% (device is just 6+ months old). I used to get from 100% down to a single digit in a day+ (30-35 hours) with iOS 11.3.1, now it takes 15-16 hours! And my daily usage pattern hasn't changed a bit. It started immediately after installing 11.4 two days ago (official version, I do not install betas).

I suspect handoff between iPhone and my Mac is the main culprit. Today took my phone off the charger in the morning at 100%. After 11 hours at work and commute (no handoff there) I was at 65%-70% when I got home. After 2 hours at home, working mainly on my Mac (very little on the phone itself), I was down to 50%. After 3 more hours (again, barely touching the phone), down to 7%. What is that???!!!

I am sorry, but this is a huge FAIL. This software "upgrade" has downgraded my battery life by 50% or so. It is unacceptable. Give me back iOS 11.3.x!

iPhone 6s, iOS 11.4

Posted on May 31, 2018 10:24 PM

Top-ranking reply

bdahl385385

Level 1

4 points

Posted on Jun 12, 2018 10:59 AM

++++ iOS 11.4 Battery drain problem SOLVED ++++

Here is the easy fix that worked perfect for me on my iPhone 6s. The battery drain issue is related to wi-fi on the 5Ghz band. You can either stop connecting to the 5G band manually (by forgetting your network and thus the password) or just select non 5G networks. The best solution though is to reset your iPhone network settings by : Settings > General > Reset > Reset Network Settings.

You will need to select your wi-fi networks again and enter the password one time.

After doing the Network Setting reset yesterday evening, my phone battery drain is back to normal on both 2.4G and 5G wi-fi connections. Others have reported similar results. Try it !!!

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iOS 11.4 battery = disaster! Handoff is culprit?

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