My iPhone 4 was fully charged at 97%?

Discussion in 'iPhone' started by The Game 161, Mar 20, 2011.

  1. The Game 161 macrumors G5

    The Game 161

    Joined:
    Dec 15, 2010
    Location:
    UK
    #1
    Should I be concerned that something is wrong?
     
  2. itsmemuffins macrumors 68030

    itsmemuffins

    Joined:
    Jun 23, 2010
    #2
    Why should you be concerned?

    There is nothing abnormal about this.
     
  3. alangrehan macrumors regular

    Joined:
    Jan 15, 2008
    #3
    I'd be worried about this too... It means your wife will be able to contact you for a whole day!

    Seriously though my phone does this too. It'll fully charge to 100% then drop to 97 or 98% in a matter of minutes. It holds at this for about 30 mins then starts to drop slowly over the day.

    It could be avoiding getting to full charge if you have something running in the background? iPod, Sat Nav app?
     
  4. The Game 161 thread starter macrumors G5

    The Game 161

    Joined:
    Dec 15, 2010
    Location:
    UK
    #4
    Well I left it on my dock to charge and when I came up I had a text maybe that had something to do with it?
     
  5. MrT21 macrumors newbie

    Joined:
    Dec 26, 2010
    #5
    no, its just a software bug, it happened's quite often with me just reset the iphone and it should say 100%
     
  6. TheGodsInRed macrumors newbie

    Joined:
    Sep 4, 2010
    Location:
    Sheffield, UK
    #6
    My old 3g used to do this at like 60% it was a pain.

    You could try letting the battery die to re-calibrate the battery
     
  7. msavwah macrumors 6502

    Joined:
    Apr 5, 2010
    Location:
    Oahu
    #7
    Sync, backup.
    Do a complete wipe and restore. Might help.
     
  8. wordoflife macrumors 604

    wordoflife

    Joined:
    Jul 6, 2009
    #8
    I'm pretty sure that is normal. I think it does that to prevent overcharging. If you take the charger out, and plug it back in, it will probably charge it to 100%
     
  9. TheIguana macrumors 6502a

    TheIguana

    Joined:
    Sep 26, 2004
    Location:
    Canada
    #9
    Apple does not specifically say this about the iPhone but all Mac portables do.
     
  10. wordoflife macrumors 604

    wordoflife

    Joined:
    Jul 6, 2009
    #10
    They said that the iPhone battery might drain if it is plugged into a computer that is on sleep. It happens to me when I plug in my phone to my computer. I assume it happened to the OP as well.
     
  11. Staindsoul macrumors 6502

    Staindsoul

    Joined:
    Apr 13, 2010
    Location:
    Texas
  12. Pink∆Floyd macrumors 68020

    Pink∆Floyd

    Joined:
    Nov 21, 2009
    Location:
    Up There
    #12
    Yes, this is quite true
     
  13. dagomike macrumors 65816

    Joined:
    Jun 22, 2007
    #13
    If you leave it on the charger, it will stop charging at 100% and then kick back on when the battery falls below a certain percent. It's a safety setting to keep the battery healthy.
     
  14. Shenaniganz08 macrumors 6502

    Joined:
    Jan 26, 2010
    #14
    100% correct

    this is reduce the amount of cycles the battery is recharged

    instead of constantly charging and keeping it at 100%, if it drops to about 99% it will not charge it, until it reaches say 95%.

    same thing happens with laptop batteries
     
  15. RedburnIV macrumors regular

    RedburnIV

    Joined:
    Jun 21, 2010
    Location:
    Pennsylvania
    #15
    I agree with what the others said. This is normal. A simple reset fixes it for me.
     

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