iOS 11.4 battery drain

On 11.4 IOS. This morning my iPhone 6S went from 100% to 20% in 1 hour and 39 minutes. Then I switched to Low Power Mode and the battery drained slowed until I could plug it in again.

I don't need all the bells and whistles. Wish I could go back several IOS revisions.

every part has a life . device battery works on the cycle counts and around 500 cycles it will works fine after this performance will start degreaded cause the battery is end of life or consumed condition so you have to change the battery . then it will works fine

I had my 3rd chat with Apple Support and they want me to have the phone inspected especially because restore phone did not work. I will arrange an appointment, I'm curious about what will happen as I've never had a problem like this before. The answer to my question about "isn't there a problem with the update?" was "Based on my experience and the customer’s I have dealt with, there shouldn’t be any issues with battery caused by 11.4" plus "need to inspect it further because the troubleshoot steps only provided temporary assistance, and there are different solutions for everyone as well".

So I backed up my iPhone 6S and reset it to factory settings. Today I went to restore via iTunes and it won't accept the password. I only use a few passwords and have tried them all. After a trip to Verizon, the local Apple outlet, and a call to Apple Support, it looks like I have lost all my contacts, pictures, passwords, apps, etc.

After he checked offline he said that Apple sent out an email about the 11.4. It sounded to me like Apple is trying to figure it out and they will ask to backup, reset to factory and then restore. If the problem persists then you will need to take it to an Apple store so they can analyze the "Battery" problem.

So after numerously entering my sign on and password I now get to manually enter in data.

iPhone, iCloud, iTunes,........iDone with Apple.

My battery started to drain quicker as soon as I connected to my work WiFi the first time after a restore phone to new. This continued even when I connected to my home WiFi even though this wasn’t happening at home the previous day. Overnight my phone went from 100 to 41. Is it changing WiFi connections that is my problem?

I reset network settings before leaving for work so my phone wasn’t changing from home to work and after 4 hours in work my battery has just dropped to 100%.

I'm sorry to hear that. I've switched both my wife's and my own phones over now, and neither have shown any sign of the battery drain problem today - yet.

This is really a weird one, and I hope Apple gets the problem fixed pronto. They told me at the Apple Store when I went in that their engineers are aware of the problem and are working on a fix for it, but that was almost two weeks ago now. They really should test their iOS upgrades a lot more before inflicting problems like this on us.😠

I totally agree that trying Beta 12.0 is risky, but it was one I was willing to take and I wouldn't recommend it to anyone who is uncomfortable with it. I was having to recharge my iPhone 6s three times a day, and had to leave it plugged in all night or wake up to a stone cold dead device. My wife's SE was having similar issues, but when I described them to the Apple Store tech he thought her issue might be a bad battery, so we're taking it in today to see what's up with that.

Since fully charging my 6s last night and leaving it unplugged all night, I've dropped from 100% to 77% in just a little over 12 hours. So it looks like I'm back to normal. So far I haven't encountered a single issue with Beta 12.0 knock on wood.

My attempt to try another restore phone as new failed so I went for the iOS 12 public beta and the battery life is much better, probably normal, I can't remember what normal really was because it was so long ago. I think I must have the latest beta because the update check doesn't tell me there's a new version.

Life is still better on 12 beta for me, it's 28 hours since I charged to 100% and now at 83%. It hasn't helped other people and I'm waiting for the power dam to burst. I started from a restore phone to new on 11.4 so I started from no apps, no old settings and no old data. Even with no apps, background app refresh and notifications off I got occasional rapid drain so I took the plunge and installed the 12 beta. I installed 1 app to control my Arlo cameras and I stayed with native mail for over a day before I added the gmail app. So only on 2 apps at the moment.

12beta 2 is marginally better and with background app refresh set to WiFi only. You can then flick WiFi on and off for best performance. Today my 6S appears

more stable. I’ve passed on the feedback via the beta feedback app.

Gogogagetipod wrote:

It’s an issue with the 6, 7 and some 8s. Mines an iPhone 6s Plus which seems to be on that list hit by this drain issue. But like others it’s a confirmed issue with the WiFi, I’ve tested it over and over. It’s present in beta 11.4.1 and in beta 12.0 I’ve ran both IOS and there is no fix.

From what I’ve seen, and there’s quite a few discussions ongoing at the moment, most iPhone models can be affected, even the new X, but it only seems a smattering of each model (ie. not all 6 or SE models).

If you then consider that an iTunes Restore as New makes no difference (which should never happen) then you can only conclude that somehow the last iOS release is not compatible with “some” internal iPhone components.

I’m not sure about iPad’s, they may have some of these “components” as well but I would consider the larger batteries could hide the issue fairly well. The above is just my guess but without Apple giving us some feedback we will probably never know what actually is behind this problem.

The 11.4 update is completely horrible for battery life. It seems okay if I don't touch my phone at all. However if the screen goes on and I do anything the battery drain is crazy. I used maps for 30 minute drive and it took +20% of my battery. That is with me plugging it in when I noticed the drain. If I use the safari browser or make a call or any app then my phone gets extremely hot and I have to stop using it. The 11.4 update is okay if don't use the phone. However if you use your phone in any manner the battery drain and heat issues are just crazy.

Like I everyone else in here I’m having the same problem with severe battery drain on iOS 11.4. First off before this I never had a problem so I don’t see these gimmic fix’s, such as not using certain WiFi’s, making sure all my apps are always turned off, etc, as a solution rather a bandaid for the problem. Whether they are doing it or not apple should take responsibility and fix this problem in a timely manner instead of letting their customers suffer. I recently went out of the country, came back, and had this problem. My mother who was here in the states with the same phone (iPhone 6s) also had the same drained issue. I talked to Verizon they said it was my phone. So I went to Apple then they said it was my battery and the problem was Verizon’s new cell tower firmware, in all fairness it did need to be replaced, however after it only marginally fixed the problem. My mother who rarely uses her phone couldn’t leave her phone on standby for more then 2 hours without almost completely dying. I couldn’t even be on the phone 10 minutes without it almost completely dieing. Went to Apple the said battery was fine on her phone and said she had to many things running, what?! Ok I’m sorry if news, email, WiFi, Bluetooth, txt, call or too many things running in the background for the battery to handle, however, never had this issue before iOS 11.4. So I did some research I heard some people had better luck on iOS 12 beta. Installed it on my phone again only marginally better. At least now my phone won’t die within 2 hours on standby, but when I’m using it still ***** the life out of my battery just as quick as iOS 11.4 and it doesn’t matter if WiFi is on or not or on 5g or 2.4. At this point Apple is garbage, has been since jobs died, to me the only fix is waiting for the new phones to come out and get the pixel 3. Googles where it’s at now. Apple is not transparent every where you go they point the finger at the other guy with no real answers. I’m not going to waste my time making sure everything is in a particular mode to make sure my battery can last 3 hours ?!?! Screw that goodbye Apple. I’m tired of waiting for the next update to solve the last updates problems, apples just a revolving door of problems.

My iphone 6s battery life completely changed after the ios 11.4 update. Last night it was 100% charged; this morning it was 18%.

The issue is the wi-fi. Listen up, Apple. When the phone is not on wi-fi or Bluetooth, battery life is great. Lasts forever. Leave wi-fi enabled for hours, and it kills battery life. Suggest Apple figure out why 11.4 wi-fi and bluetooth cause excessive battery drain. Annoying. And that doesn't even begin to address the fact that this is a supposedly "perfect" rebuilt phone that Apple forced on me when my fresh out of the box iphone 6s home button failed after 65 days. Thanks Apple!

Hi i dOOd. I noticed Airplane Mode does resolve the battery drain problem. However, Airplane Mode turn my iPhone 7 Plus into an idiot phone. As long as I off the airplane mode, the battery starts draining. With 4G function off, battery reduce at 5% per hour. Before iOS 11.4, my 7 Plus last for around 1.5 days (I am not a heavy user).