iPhone 3GS - Charging is not supported by this accessory

Discussion in 'iPhone' started by x-Laura, Sep 30, 2011.

  1. macrumors newbie

    Joined:
    Sep 30, 2011
    #1
    I have recently bought a used iPhone 3GS. The phone is up and running, except for one minor issue.

    When I connect the iPhone to my Windows PC, I get the message "Charging is not supported by this accessory" with a yellow triangle and an exclamation mark. It will successfully sync but simply won't charge.

    I have tried various USB ports and different cables, all official Apple. I have tried restoring the iPhone, reinstalling iTunes etc.

    It will however charge from my work laptop, so I am investigating the set up of my USB ports on my PC.

    Any other idea's?
     
  2. macrumors member

    Joined:
    Nov 7, 2010
  3. macrumors newbie

    energetic

    Joined:
    Sep 27, 2011
    Location:
    Athens, Greece, Europe, Earth, Universe
    #3
    Do you connect your device directly to the USB port? If you are using ie an USB cable extender you may have such an issue. A fellow user of a 3GS had the same problem and removed that extender.
     
  4. macrumors 6502

    Joined:
    Jan 3, 2005
    Location:
    england
    #4
    Agreed.

    Is it an older machine?
     
  5. macrumors 68040

    Stealthipad

    Joined:
    Apr 30, 2010
    #5
    Older computers need to be TOLD to crank up the voltage.

    I know on a Blackberry I had to install the RIM software before my Blackberry would charge. The software installation told the computer to increase the voltage to the USB ports.

    I do not think this is a problem with newer computers. I know my iMacs charge anything.
     
  6. macrumors 68000

    thewitt

    Joined:
    Sep 13, 2011
    #6
    As others have said it's the available power on your USB port. Some computers will increase this with a change in settings best done through a number of free utilities floating around the web. Some will never increase however so charging will never be an option.

    -t
     
  7. macrumors 6502a

    Joined:
    Jul 8, 2011
    #7
    the iPhone requires at least USB2.0 (which is the current standard) most computers you see walking around today are USB 2.0, you have a few people with laptops that have 3.0, but only much older machines still have classic USB. Classic USB has a lower wattage that prevents the charging. I believe USB 3.0 has a higher wattage than 3.0, one of the reasons why it allows for faster speeds.

    Sucks, but at least your iPhone and cables are fine!
     

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