iOS 11.4 battery drain

Hello MichelPM, I've posted this on other threads and people seem to be having success with it:

Try resetting your network settings under Settings > General > Reset > Reset Network Settings.

This appears to be a network connection issue and this could help a lot of folks out there.

I have experienced the same issue with 6s model (which I use for work). Literally drained my phone in less than 1 hour from full charge.

I did not experience the issue with my personal 7plus or my Ipad Pro. I changed my home Wifi from 5 ghz to 2.4ghz and so far that seems to have helped.

What I am finding now after having responded to this thread is that my battery life is being drained from the incessant emails notifying me of further posts about battery life. (For the North Americans, this is ironic). I wonder if anyone knows how to switch them off.

Otherwise the battery life seems to be getting a bit better this evening: it’s lost only 8% in over 7 hours, without resetting network settings.

There seems to be a bug with wifi in iOS 11.4. I had the battery draining issue on my iPhone 6s and disabling wifi, though not an ideal fix, has resolved the issue. I've had wifi off for several days now and the battery performance is back to normal.

Some people are suggesting that the problem only occurs when connecting to a 5GHz wifi network, whereas with 2.4GHz networks it is fine. I haven't tried that yet myself so can't vouch for it, but it might be worth a try if you can't do without wifi.

I have the same issue on iPhone 7. Battery life lasting around 12 hours. It went from 50% to 20% after one short phone call. Highest using app consumed 18% of battery in previous 24 hours. Spoke with Apple suppor, they did remote diagnostics and everything checked out ok.

Not having the issue with my iPad.

seriously disappointed

I am having exactly the sameness issue.

I’ve been an iPhone user for a long time. So sick of the performance downgrades in the past!

Instead of innovating, the current Apple company seems to be more interested in downgrading you old phone. Guess what? My next phone will not be an iPhone for sure!

I found two bars at the bottom of the screen. One said “following” and was checked - which I didn’t enable. The other said bookmark. I touched the “following” to uncheck it. Now it says “follow”. I’m hoping that stops all the emails.

After updating my 6s to 11.4 and having it fully charged in the morning (7:00), I did not mention battery differences till about 15:00 - it went down to about 60% - as I looked to the phone again at about 17:00 it was down to 14%, not having used it. And I could watch the percentage going down by 3% just typing a text message.

I spent nearly 3 month trying to determine the route to this problem, I finally got my answers in the form of an awkward technicians soft explanation in which he explained my phones problem wasn't the latest ios update, it was more to do with the fact I had a Motorola

Which is becoming quite a common place mistake in recent times

my iphone 6s plus took a massive hit on battery life after switch to ios 11.4. appears to be entirely due to wifi. If wifi is shut off no drain. This will need a software fix from apple-hopefully ASAP.

I have this problem on my Ipad Pro. Before 11.4 I could go for around 4 days before recharging. But now it doesn‘t even last for a day. In my current charge, I have 14 hours of stadby, I watched youtube for 1.1 hours and did 20min of browsing and I am now at 6% remaining. Just to write this message it took 3% of the battery. This is ridiculous. Considering the battery size in an Ipad pro there is no way it should drain that fast and everything was fine before 11.4. Please Apple fix this quick.

I have this problem too. It seems like it is definitely something with the 6x models because it does not affect either of my iPads (3rd Gen and Air 2) or iPhone 8.

Tried a complete wipe and restore and it did not help. Deleted apps, turned off and/or limited location services and everything else I could think of and nothing helped.

I have also noticed that in addition to the general battery drain problem, there is some specific poor performance with photos and video. Anything that involves viewing, editing or sharing photos DESTROYS the battery charge. Simply opening Photos, viewing, cropping, adjusting and sharing a single photo can clip 10-15% off the battery. Viewing a video on a website is similarly lethal to the charge.

I'm having the same exact issue. My battery health is at 88%, but I can sit and watch my iPhone lose battery life even with no usage or anything running in the background. I used to be able to go all day without charging it, now I can barely go 3 hours. I want to downgrade to 11.3 but I'm not sure how. I hope Apple fixes this soon!

I’m having the exact same issue as well. I can literally see the percentage drop about every minute or so. It hard to use the phone like this as it is dead half way through my day and I'm not even using it for anything.

Well,

My wife “accidentally” updated her iPhone SE early this morning and over the air over Wifi, which I loathe EVER doing with any of our iDevices, and miraculously her iPhone has NOT been affected by the battery drain issue you all are experiencing.

After all of the “sky is falling” postings about the severe battery drain under iOS 11.4, I got really P.O.ed with my wife and told her to expect rapid battery drain on her iPhone SE, indefinitely, with no quick update fix coming.

But this appears to have never happened.

Her iPhone SE was at 88% at 6am this morning.

After the iOS 11.4 update and 7 hours later ( 1pm ), her iPhone is only down to 75%.

So, this does not feel like drastic battery drain to me.

She has both Cellular, Wifi and Bluetooth always turned on, but I have all of our iDevices setup per the extensive checklist I have been posting here and in other “iPhone battery drain after iOS 11.4” posts.

So, this battery drain issue is NOT affecting every iPhone currently able to run iOS 11.4.