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iOS 5.1 Battery Issues Even Worse

56483 Views 329 Replies Latest reply: Sep 29, 2012 7:11 PM by GRMU99 RSS Branched to a new discussion.
  • iPhone_Dave Calculating status...
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    Apr 3, 2012 12:57 PM (in response to omgletmeplay)

    Ok, so in my last post I was stating that my iPhone was lasting longer after a Sync with my MAC, but I noticed this evening that my iphone stayed at 100% for a while (about an hour) then dropped off to 97%, then to 94% after 30minutes, then to 92% another hald an hour later...etc...etc..  This is without using the phone at all!!!


    So I'm doing a fresh Restore from NEW.  I'll keep this discussion posted as to how I got on with it when it's all back up and running!

  • bchavali Calculating status...
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    Apr 3, 2012 2:30 PM (in response to iPhone_Dave)

    I am also seeing a marked decrease in battery life with iOS 5.1. I had excellent batter life with 5.0.1, but things have taken a turn for the worse after the update. It still gets me through a day pretty comfortably, and I am not complaining (very loudly), but battery life has dropped atleast 30% from that with 5.0.1. And yes, I finally cleaned up and restored my phone as new today. Let's see how that works. My guess is that they screwed up the battery meter in this version, preventing a full charge, or it is that fancy charge/drain/charge dance they are now doing in order to prolong battery life.

  • Mark Shlomchik Calculating status...
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    Apr 3, 2012 8:09 PM (in response to omgletmeplay)

    Yes, I can confirm that my battery got much, much worse with 5.1. Used to be fine. Now, even with no apps running it is dropping 1% every 5-10 mins. Lost 2/3 of power today with little use, no phone calls and no listening to music. I would love to know the solution.

  • ademcc Calculating status...
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    Apr 4, 2012 7:07 AM (in response to Mark Shlomchik)

    I had no issues with my battery life before this latest level of software. Now it is dropping at least 10% every hour - WITH NO ACTIVITY.


    I have calibrated it, charged it 100%, ensured no apps are on, shut down all services (Bluetooth, WiFi etc etc - even though I never use them), reduced the screen brightness, reduced frequency of mail checking - and still the battery is out very quickly.


    I am astounded that they have managed to screw this up again.


    Please Apple, fix this issue immediately.

  • iPhone_Dave Level 1 Level 1 (0 points)
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    Apr 5, 2012 2:04 AM (in response to omgletmeplay)

    Ok, I've sorted it with my iPhone 4S finally!

    Here's my findings as I said I would post.


    I completely reinstalled iOS 5.1 as a new iPhone from my MAC in iTunes.

    I then used a method which I previously gave a link to in one of my previous posts, to put back on application data and game save data. 


    I used the phone as normal, run the battery right-down then charged it right up fully.


    I switched off TimeZone services in settings, left the phone overnight with Wi-Fi on and Bluetooth off and guess what!!!!

    Instead of the phone loosing ALL Battery power overnight.... I lost only 3% !!!!!!!


    So my advice from my experience is to reinstall iOS 5.1 as a new phone and restore basic application data to your phone if that's what you need, and try adjusting the TimeZone setting to OFF.

    I'm going to switch TimeZone setting back on tonight to see what the difference is after doing the new install.

  • sue2459 Calculating status...
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    Apr 5, 2012 2:55 AM (in response to iPhone_Dave)

    Thank you for this.  My husband, son, son's brother-in-law and myself have all been driven mad by the battery drain. 


    Apple - do you read these forums?  If so, why are you not doing something about this issue?  Owning an iPhone does not come cheap - it's meant to be a premier product - and yet you treat your customers appallingly.  Why should we have to spend hours of OUR time fixing a problem YOU have caused?

  • ademcc Level 1 Level 1 (0 points)
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    Apr 5, 2012 12:18 PM (in response to sue2459)



    So, I thought long and hard about what I had done to get my iPhone all messed up and battery draining up to 10% an hour. Answer: Obviously nothing.


    However I did this to resolve it:


    1. Deleted any new apps that I had recently installed, and also those I don't ever use.

    2. Go to Settings > Locations services > Scroll all the way down to the bottom > Click on System Services > turn them all off. You might be wary of this but my rationale was as follows:


    1. Cell Network search - I smell BS here - My Nokia 6150 didn't have GPS and it worked just fine in finding the nearest cell tower.

    2. Compass calibration - I live in NY. I know which way NSEW are without the compass.

    3. Diagnostics and Usage - Errr - I don't send stats to apple anyway, so why is that on?

    4. Location Based iAds - Yeah, sure Apple, I don't mind helping you to make even MORE money from me by giving my location to local advertisers - Where is my cut?

    5. Setting time zone - Normally I wake up in the same time zone as the one I went to sleep in - except for that one Bachelor party...

    6. Traffic - Never use it.


    Did the above, switched the phone off for a few minutes, charged it up and away went the drain.


    Try it out and see if it works for you. I had to do no re-install or factory reset on my 4S.

  • KRDHarris Level 1 Level 1 (30 points)
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    Apr 5, 2012 2:26 PM (in response to omgletmeplay)
    There appears to have been a battery management problem introduced in iOS 5.1. My iPad 2's previously excellent battery management quite suddenly deteriorated after installing iOS 5.1, and I found two things:

    (1) The contents of iOS 5.1 include "Addresses bugs affecting battery life”.

    (2) Other people reported the same problem after installing iOS 5.1. Try googling on "ipad slow battery charging" and you will find several threads, such as at

    I do not understand how Apple could have made changes to battery management and not discovered in their testing that they had made matters worse, at least for iPad2s, and probably several other device types too.
  • JVXB Level 1 Level 1 (50 points)
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    Apr 5, 2012 2:30 PM (in response to omgletmeplay)

    I understand there are many fixes, and good advice by members, above. But what solved my iOS 5.1 battery draining problem was very simple: I deleted and re-added all my mail accounts. I went from losing 50% in one hour, to being at 100%, as usual, overnight.


    (I do have minimal Location services, and iCloud support off, as a rule, though)

  • Peter Mallamo Level 1 Level 1 (140 points)
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    Apr 7, 2012 3:59 PM (in response to omgletmeplay)

    Well, I have no one to blame but myself. I had put off upgrading since 5.0 came out. My iphone 4 was working great, and I was getting several days from my battery (granted I only use it as a phone and the occaisonal app, email, etc)


    I finally jumped in yesterday and ever since I can see my battery life declining. It is fine in standby, from 6:30 pm yesterday to 6:30 am today it only went from 100% to 96%, but when actually using it I can watch the percentage decline. I have reset all settings to where I want them, bascially.....


    -no push or fetch

    -only phone and message notifications

    -only 3 location services

    -spotlight off

    -bluetooth off

    -no icloud


    I have reset all settings and am now waiting for the batt to totally drain so I can re-calibrate. As I did the reset all usage info is not available until I fully charge, but quite honestly I know from being an iphone owner since 2008 the battery is not operating normally. I also know that all of my settings are as they were before upgrading. I will continue to work on this as I know there is a way to get it back to performing like I know it can.


    On a side note, after reading through all 20 pages of this post, I cannot believe there are people here complaining about grammatical errors by those posting (and essentially wasting the time of people wanting to troubleshoot problems). I think you have WAY too much time in your life if you spend it being aggressive towards others that only want a phone that works.


    It's a computer that fits in your pocket and is also a phone, so stop bitc**ing and figure it out. I think all Americans should visit the 3rd world to appreciate what we have and not feel so entitled to have what we think we should have.



  • KRDHarris Level 1 Level 1 (30 points)
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    Apr 8, 2012 7:29 PM (in response to KRDHarris)

    Further to my previous post, I read that someone had solved their iPad battery management problems by restoring their iPad to factory settings, and then restoring from backup; they felt that the original 5.1 installation had completed but had been corrupted in some way that was affecting battery management.


    I therefore tried restoring my iPad 2, and battery management is also restored to what it was before!


    I have no idea what the actual problem was, or if the hypothesis of slightly corrupted 5.1 installations has any merit, but if anyone else has run out of ideas, it might be worth trying a restore.

  • timothy_ Calculating status...
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    Apr 9, 2012 9:47 PM (in response to omgletmeplay)

    Doing a hard reset 3 or 4 times (home + standby button held down), and turning off notifications for unneccesary apps that had somehow put themselves in the notification centre fixed this for me. I was experiencing the exact same issues as described above, less than 20 hours in standby. now back to normal, yay !

  • nilesh73 Level 1 Level 1 (0 points)
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    Apr 10, 2012 4:47 AM (in response to ademcc)

    Here is the proof that my battery life on iphone 4s ios 5.1 improved very much after updating to ios 5.1IMG_0079.PNG

  • Peter Mallamo Level 1 Level 1 (140 points)
    Currently Being Moderated
    Apr 10, 2012 12:38 PM (in response to omgletmeplay)

    I also seemed to have figured it out (for now at least).


    After a full drain and battery recalibration (I left it dead for several hours after it had drained all the way down), and also after deleting 3 apps that had updated themselves after upgrading to 5.1 I am now seeing normal to better usage.



    Hopefully it stays this way. For those of you with battery issues keep on it, as there seems to be solutions out there!


    Good luck.



  • zippy666 Calculating status...
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    Apr 11, 2012 2:41 PM (in response to omgletmeplay)

    Fiddling with (turning off) Push fixed my CPU usage. 


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