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iPhone 4S battery percentage wrong

25597 Views 9 Replies Latest reply: May 21, 2012 10:47 AM by masz_fant RSS
Morac Level 1 Level 1 (70 points)
Currently Being Moderated
Nov 29, 2011 11:17 AM

Has anyone noticed the displayed battery percentage being incorrect?

 

I've seen a couple of examples.  Once when I let my iPhone 4S drain down to 1% and then continued to use a GPS app for another 20 minutes until the phone turned off.  Another example was last night when my iPhone 4S charged up to full at 96% (notice the plug ni the battery indicator).

 

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iPhone 4S, iOS 5, AT&T 32 GB
  • wjosten Level 10 Level 10 (91,290 points)
    Currently Being Moderated
    Nov 29, 2011 11:24 AM (in response to Morac)

    Recalibrate your battery:

     

    Let the battery drain on its own until the phone shuts off. Then charge to full. Do not do this more often than every 2 ~ 3 months or so.

  • wjosten Level 10 Level 10 (91,290 points)
    Currently Being Moderated
    Nov 29, 2011 2:09 PM (in response to Morac)

    Well, there is no other setting/procedure to recalibrate the battery. I would not recommend going through the option of restoring as a new device, but if it bothers you that much, that's your only option left.

  • wjosten Level 10 Level 10 (91,290 points)
    Currently Being Moderated
    Nov 29, 2011 3:02 PM (in response to Morac)

    Wait for iOS 5.1(in beta right now), I can't discuss anymore than that .

  • sigsauer Level 1 Level 1 (0 points)
    Currently Being Moderated
    Jan 16, 2012 7:00 PM (in response to Morac)

    this happened to me today.

    FYI, you have to restore via iTunes. connect your iphone and do a restore.

    this will resolve the issue since it will reinstall ios5.01.

    hopefully this problem will be resolved in next update 5.1

  • imark89 Level 1 Level 1 (0 points)
    Currently Being Moderated
    Jan 16, 2012 7:21 PM (in response to Morac)

    This was happening to me - i charge my iphone 4s whilst i was sleeping wake up and it will always be 93% charged. So i let my phone fully drain twice, and now its working fine. There is a more technical term for this but i cant find the article.

  • masz_fant Level 1 Level 1 (0 points)
    Currently Being Moderated
    May 20, 2012 4:24 AM (in response to Morac)

    hey morac, could you please specify what reset you're referring to, and each step in order to fix the problem?

    I have been experiencing the same problem, although I am currently using newest iOS on my iphone 4s 64gb. I have tried battery calibration and restore but they don't work out for me. thanks!

  • masz_fant Level 1 Level 1 (0 points)
    Currently Being Moderated
    May 21, 2012 10:47 AM (in response to Morac)

    additional info:

    after recalibration my battery able to fully charge to 100%. but the percentage indicator still inaccurate. I compare it to my battery+ app. when the indicator shows fully charged, in contrary the battery app still shows the battery charge not done yet and need less than an hour to fully charge. so the question here is how to get the software percentage indicator back to be accurate again.

     

    hope others can help too. thanks.

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