iPhone 5 - "it charges without power"...

Discussion in 'iPhone' started by Liam Steven, Jan 3, 2013.

  1. macrumors regular

    Oct 9, 2012
    I've noticed a poor battery life on my iPhone since I bought it but it's starting to get a little frustrating.

    I charged my iPhone last night and took it to work today with a full charge. It's been in my pocket most of the day, having only sent a few texts and taken two pictures (with flash) however returning home I find 20% left.

    I let the phone drain to 11% after which it jumped up to 18% (all by itself) and it's done this several times now. I've also found it switches itself off on 15% occasionally; a clean reset hasn't resolved the issue.

    More of a frustration than a cause for concern.

    Has anyone else noticed similar issues?
  2. macrumors 6502a


    May 12, 2010
    I swear this morning I saw my phone at 91% then jump to 94% but could have been my eyes...

    I doubt its nothing more than a bug with your iOS.
  3. macrumors 68000


    Mar 17, 2010
    Planet Earth
    Your iPhone is collecting electrons from your leg as you walk around.


    I think iOS is just sometimes a tad off in determining battery life at certain levels and it tries to correct itself here and there.
  4. macrumors regular

    Dec 6, 2012
    Orchard Park, NY
    Take it back if that's the best you can get. There are tons of battery threads in here and there is no way you should be getting that for battery life.

    Mine lasts all day, easily, with moderate use.

    One thing I do wonder, was the "battery percentage" indicator one of the worst ideas ever? LOL Seems like people freak out when they see the numbers decline. :D
  5. thread starter macrumors regular

    Oct 9, 2012
    I feel a little stupid now as I turned down the opportunity of a replacement iPhone from Apple a few weeks ago.

    For about 1 month after purchase I couldn't make/receive calls properly as the call was exceptionally distorted. I erased the phone and did a restore from iCloud (previous data/settings used on iPhone 4) however problem remained. I fixed the call issue by restoring data and resetting system settings (something that hadn't worked previous to an erase) however Apple had already agreed to replace phone.

    I refused delivery of the replacement because technically speaking the call issue was fixed and I couldn't be bothered arguing with Apple had they kept the £529 deducted from my bank account following technical assessment of a working iPhone.
  6. macrumors 6502a


    Jan 10, 2012
    This has happened to me several times. 2-3% jumps now and then. I think nothing of it - but then again I get 2 days standby with 50% left after 6 hours of use.... so ... I'm pretty happy.
  7. macrumors 68040


    Sep 29, 2009
  8. macrumors 68020

    Apr 12, 2011
    That's not unusual. After a full charge, I let it drop to 97%, reboot again, and it's back to 100%
  9. macrumors 65816

    Bernard SG

    Jul 3, 2010
    OP, it's very likely that your hardware is totally fine but there's something buggy with some software, getting into an infinite loop looking up for something on the internet. A restore could help.
    Also check if bluetooth is turned off.
  10. macrumors 6502a


    Mar 2, 2010
    San Diego, CA
    Granted, I haven't noticed this with my iPhone 4S (iOS 6.01). I think a nice restore from back up could help. Otherwise, I'd just swap it at the Apple.
  11. macrumors 68030

    Sep 21, 2011
    Think of a battery indicator as you having a measuring cup where the fluids are in constant movement. You'll have a hard time seeing the correct volume until it settles down, but you need to give a specific number.

    This is also the reason why sometimes one percent lasts like an hour, and other times ten percent disappears after five minutes of gaming.

    Don't be alarmed, it's completely normal. Also, remember those old Walkmans with AA-batteries? You know how when the battery went dead, you could leave it for a day or two then get like another 30 minutes out of them? Well, yeah. Same thing here, in a sense ;)

    Uhm, that's regarding the battery indicator gaining a percent here and there, not regarding the phone switching off at 15 % :p
  12. macrumors 601

    Feb 9, 2011
    Usage varies by person and the OP hasn't provided enough information to determine that such battery life is truly out of line for that usage. The OP has provided some info but what he has done is just part of the picture. Coverage, apps and configuration will also affect battery life.

    That said, Apple can test the device to determine if there is a battery issue and replace if there is a problem with the battery. OP can also restore as new and the use the device stock to determine if it's a hardware issue or a software issue.

    And, as always with these battery life threads, "moderate" means nothing. Everyone thinks that their usage is moderate. If you want to compare then you need to be very specific regarding your configuration, apps and usage.
  13. macrumors 6502a


    Dec 9, 2012
    Boston (aka Red Sox Nation)
    most of the time my iPhone 5 only charges to 99% then when i unplug it jumps to 100%. Ghost in the machine i guess.:p
  14. thread starter macrumors regular

    Oct 9, 2012
    Thanks for the posts.

    I am going to call Apple. Just got home and it was 12%, sent an email and when I looked up it was on 2%. Plugged it into charger and it changed to 10% in seconds. I have other problems too so it looks like a claim on Apple Care.

    Quick question, if I have it replaced under Apple Care will it be a new phone or refurbished and will my Apple Care transfer to new phone or will it be void?
  15. macrumors 68020


    May 6, 2008
    It will most likely be a refurbished phone. And yes, Applecare will transfer to your new phone.
  16. macrumors 68020


    Oct 25, 2009
    You probably have a rogue app murdering your battery life.
  17. thread starter macrumors regular

    Oct 9, 2012
    I only have essential Apps running and have been for a few days, in an attempt to isolate what you describe.
  18. macrumors 68040


    Nov 20, 2008
    Just do a hard reset and calibrate your battery, you'll be fine. It has happened many times on my iPhone 4S. Calibrate it one every month or so and you'll be good. Or better yet, turn off the % indicator.
  19. thread starter macrumors regular

    Oct 9, 2012
    No, I like to live close to the edge and use my iPhone until around 3% of power.

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