iOS 11.4 battery drain

It's seems to be the way they operate in that you never see admission of problems, certainly not in these communities. I expect we will see a fix, maybe the fix is in beta test. Even though this community is not Apple support I do know they are watching because I have been contacted by telephone by them after I contributed to a different problem in this community. For now it's lower power mode and wifi off until the next iOS release which I hope will provide a fix.

I decided to give restore phone "as new" from iTunes one more go with no restore from a backup until the new phone proves itself.

I only re-installed 1 app - gmail. The battery dropped to 96% after a day at work. Wifi was enabled but I couldn't connect to wifi due to a work issue. This is encouraging, hoping this lasts and hopefully I can connect to work wifi tomorrow for a better test. At home the wifi is up and the battery has only dropped to 95% after a couple of hours.

I've been having the same problem ever since I updated to iOS 11.4. I can go to bed with a fully charged phone and wake up to find it stone cold dead. I went to the Apple Store suspecting a bad battery, and after the tech ran some diagnostics, he identified a known problem that Apple engineers are supposedly working on. I went home without a solution to the problem and have been living with it for several weeks now.

BUT! I decided to use low power mode one day and no more battery drain. Yes, I have to live with low power mode for the time being, but at least my phone doesn't have to be charged three times a day anymore.

Sorry but not much of a solution, but it does help somewhat.

The only way I can conserve battery is to switch to Low Power Mode.

Yesterday I was able to go from 7:30 to 2:30 and go from 100% to 69%.

This included 3 hours on WIFI. All on Low Power Mode.

My Battery Standby was about 2.5 hour greater than Usage so I wasn't using it constantly.

When I did start using for Hot Spot then the consumption went down rapidly.

It would help to be able to leave 100% on low power mode and not have it reset when it reaches 80%.

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.

Yes, well like I said, this problem doesn't seem to have any one, single solution. I tried all of the wifi solutions presented and none of them worked for me. Installing the Beta 12.0 and disabling background app refresh was what fixed it for me. This must be the most quirky bug out there.

Nope. Nothing stood out, and I had already disabled background app refresh and location services prior to this. But I just found out, with a little research, that sometimes severe battery drain can happen after an IOS update, but this can resolve itself in a few days. It’s like scratching the bottom of a shaken soda can for 30 seconds to keep it from exploding when opened, or taking zinc to “cure” a cold. Was it the remedy that worked, or the waiting? I’m wondering if the problem simply resolved itself rather than my fiddling with settings.

I have been following this thread for some time and done most of the suggestions - location services, background app refresh, but someone mentioned wifi being an issue and 6s. My experience if I left my 100% charged phone without charge overnight, it drained to 7% while unused locked etc. I went out of town and turned off wifi, problem solved! I returned problem reoccurred. I also connected to wifi 5G at home. I am now trying the standard wifi and it seems to be ok. I am still on 11.4, as I am not sure about 11.4.1! I wish Apple would at least be honest and let us know if they are trying to fix this bug with 11.4.1!

After 11.4.1 fixed my 6s, restored with iTunes to new iPhone setup with 1 app added, it sat on the shelf last Friday, Saturday, and end of day Sunday the battery was at 64% without charging since Friday morning.

Reasons for iOS 11.4 could ruin your battery life:

The higher version makes your phone to work in the advanced configuration. Maybe this is the reason to drain your battery when not in use. Anyway this one of the disadvantages of this iOS version.

Let go to the fix.

FIX 1: Problem with Wi-Fi

The problem may be with your Wi-Fi after upgrading to 11.4 some major changes happen on it. To rectify this by Switching from a 5GHz network to a 2.4GHz network. Otherwise, disable Wi-Fi.

FIX 2: Battery drain recommendations in settings

IPhone iOS will suggest some system changes to save your battery life. Some of your iPhone recommendations will appear in our tips below, but you can always check the settings for your iPhone's battery life. Let see what changes your iPhone recommends.

Steps to disable location Service:

1. Go to Settings app.

2. Select Battery Option, under that it will offer changing settings which will improve battery life.

3. You can check every suggestion and choose appropriate check which needs exactly.

4. For more details...

[Link Edited by Host]

For me its the opposite case when i was in 11.4 my battery kept on going down extremely fast.. 3%-4% every 5 minutes of use, not to mention the drain when your phone is just on standby, Happened both on cellular and wifi mode.

Things started looking up when I updated to 11.4.1 the battery decrease is lowered even when using or on standby. I am now on 4hrs usage with 93% battery out of 100%.

Take note reduce motion, email refresh, low power mode are enabled for my phone and location disabled.

iPhone 7+ 11.4.1 user here

Good Luck.

1. Please tell Apple – Feedback - iPhone - Apple

2. May be you can try to disable 5GHz WiFi and use 2.4 GHz instead, disable Location Services and Background App Refresh

3. Please tell Apple about it – Feedback - iPhone - Apple

I Have this Problem since 11.4. comes out and this is quite a time now.

As previously reported, after updating to ios 11.4 I suffered for extreme battery drain. My iphone 6 passed from being updated once a day to several times per day. Moreover, the battery status passed from 97% to a mere 50% in almost 30 days. Battery drain happened both with WiFi on and off. Nothing was able to reduce the drain noticeably. All were just "like tears...in rain".

After updating to ios 11.4.1 things started improving, though my iphone was not the one I used to have with 11.3.

Therefore I went to a genius bar, where I exposed the problem and asked for a battery change. Most of the guys I spoke with were aware of the problem.

Now, after three days of usage I can say that yes, ios 11.4.1 has definitely improved the situation vis a vis ios 11.4, BUT performances are not as before. If I extensively use the phone the battery charge falls more rapidly than it used to be before. I think the new updates have shift hardware usage toward a higher level.
In a year or so this iphone will definitely need to be changed, but the way it's happening it's extremely frustating as I feel forced to do that.

jvale74 wrote:

...Apple is not doing anything to solve this problem. We need to do something guys !

There two main issues being discussed at the moment as a result of iOS 11.4 and 11.4.1 updates, this one about excessive battery consumption and this IOS 11.4.1 and wifi problem with respect to WiFi disconnects.

It appears the WiFi issue has now attracted the attention of Apple because not only have bug reports been filed by various members but Tech Support are now contacting members of this forum (from the above discussion group) personally to talk about and gain further info. This has been ongoing now for about a week and someone has posted Apple are close to a fix after gaining some feedback during one of those exchanges.

I would advise all that are experiencing the battery issue start a similar process, namely completing bug reports and contacting Apple direct, do not accept it’s down to a bad battery and push the issue until they start to actively seek further info as they have done for the other problem.

Apple Tech do in fact read these discussions so it’s also important when posting to put as much info regarding what's been tried and if any improvement (or not) was noted while trying to keep the frustration element under control if possible.

Same situation for me. Didn’t even know it’s a software problem until after battery was replaced (and still had massive drain). I have been diligent to update to latest 11.4 and then 11.4.1 but this causes the battery draining problem (will wait a bit for future iOS releases).

The config reset back to factory setting helps a bit (still unimpressed given that I have a brand new battery now). Interestingly the factory setting has location services completely turned off. Also noticed whenever google map is used the battery drains pretty quickly. This is a wild guess maybe something with the location service part of iOS is causing this.

I think Apple really dropped the ball this time.