iOS 11.4 battery drain

I downloaded 11.4.1 and my iPhone 6s is back to normal. I switched my wifi from 2.4G to 5G and battery drain is what I would expect. It is not excessive. However, I don't know whether or not the update fixed the problem or it was something else. Someone much earlier in the thread speculated that there was a lot of indexing or searching going on after the initial update to 11.4.

Per Apple - 11.1.4 does NOT fix the slowness or battery drain issue. If the issue goes away after installing this update then it is a one-off.

And per Apple if a full restore and setup as a new iPhone solves the issue - there's no bug to fix, they will not have any "Updates" to address this issue.

In addition - Apple states that if the issue persists after a full restore and set up as new iPhone - then the issue is hardware related and to bring your phone to a local Apple store.

I have had my iPhone 6S Plus for 3 years now and never did a clean restore / set up as a new iPhone in over three years. I noticed the phone was getting very sluggish even before the 11.4 update. To my suprise when I set the phone up as new - it is VERY fast now - it even seems more responsive than when I first got it.

My recommendation is as follows:

1) Do a full BACKUP to iCloud and to iTunes

2) Do a full restore and set up phone as New (DO not restore the backup)

3) Re test - if battery drain goes away, then you know it is something which you had on your phone which is not fully compatible with the 11.4 upgrade.

4) Feel free to restore your backup - but note the battery drain may come back as a result of restoring.

5) If you decide to keep your iPhone as new - go ahead and manually reinstall your apps, and make your configuration changes - keeping track of what you are doing. At some point down the line - your phone might start to consume the battery abnormally - then you will know what app or configuration change caused it.

Well not me with my iPhone 6, 6s, 6s Plus, 7 & 8 Plus with iOS 11.4

Make a genius bar appointment with Apple for an evaluation.

They have tools that can check your iPhone's battery.

If you've changed it then bring it back to where you changed it.

I think we should ask ckuan about everything regarding battery , since all are wrong about battery drainage problem!

Why don't you tell us where you changed your battery instead?

lol now I am just curious what you do with so much of the gadgets? your 5s, 6, 6s, 6sPlus, 7 and 8 plus and also ipads

what for? just out of curiosity though!

Well unlike you, I got a family and they all use Apple devices.

For our music workout, my family and I use the old iPod Classic and the old 2 iPhone 3G as well as iPhone 4s as an iPod.

And also, my Battery Health has gone down a few percentage points - perhaps coincidence?

Bought phone new in NOV 2017 and I now have a maximum battery capacity of 84%. Pretty useless.

Giant battery suckage

Aweful update

Yet again

I have also noticed that ios11.4 is chewing up my battery faster 😟

Drains much faster for me on iPhone X and iPhone 7 Plus.

Looking like lasts about 50% less than it used to - no change in usage.

Battery Health at 100% on iPhone X and 98% on iPhone 7 Plus.

Has anyone tried my suggestion to disable the Handoff feature (see above comment) ? It worked immediately for my 6S. Anyone?

G

Anyone else notice that Apple support could not be contacted until this morning?

Thank you yes I did and it didn’t help my 6