iPhone 3G[S] not charging on usb port in car

Discussion in 'iPhone' started by topherg, Jul 5, 2009.

  1. macrumors regular

    Joined:
    Jun 24, 2009
    Location:
    soCal
    #1
    Hi guys, I have a usb port in my car which before buying my 3GS I would charge my iphone 3G on with the data cable. Now for some reason my 3GS will not charge in my car but if I hook up my 3G it charges just fine! Anyone experiencing similar issues, or know why it will not charge my 3GS!? Thanks for the help!
     
  2. macrumors 68040

    MBHockey

    Joined:
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    Location:
    New York
    #2
    The USB port is in your stereo? Which stereo is it?
     
  3. macrumors 603

    Joined:
    Mar 20, 2007
    Location:
    Virginia
    #3
    I have the same problem with my USB charger (cigarette lighter plug). The odd part is the charger puts out the same amount of power as the a/c adaptor. But the phone just won't charge.
     
  4. thread starter macrumors regular

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    #4
    No, it's below my stereo next to my aux input. It's an 09 mini.
     
  5. macrumors 68040

    MBHockey

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    #5
    I meant is it part of the stereo or a separate device like a cigarette lighter charger
     
  6. thread starter macrumors regular

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    #6
    I guess it's part of the stereo it's not a cigarette lighter charger but it's not located directly on or near my stereo.
     
  7. macrumors 6502

    Joined:
    Jun 29, 2009
    #7
    I'm having the exact same problem with ALL of my accessories. I thought all them were supposed to work with all 3Gs as well. My docks and my FM transmitter/charger no longer work.

    Apple + backward compatibility = epic fail.
     
  8. macrumors 68030

    Full of Win

    Joined:
    Nov 22, 2007
    Location:
    Ask Apple
    #8
    is it possible that the charger is going through the firewire pins; which is no longer supported by Apple? There are adapters for this.
     
  9. macrumors 603

    Joined:
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    Location:
    Virginia
    #9
    How can it do that if it is a USB charger (or port)?
     
  10. macrumors 6502a

    iMacDragon

    Joined:
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    Location:
    UK
    #10
    It does appear apple have done some kind of udpate to the USB charging, I've got a battery pack that no longer works with 3GS too.. Not terribly impressed with this move.
     
  11. thread starter macrumors regular

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    #11
    Great, hopefully apple fixes this issue on 3.1!
     
  12. macrumors 6502

    Joined:
    Jun 29, 2009
    #12
    Don't count on it. Time for me to throw away my two docks and fm transmitter :mad:
     
  13. macrumors 6502a

    Joined:
    May 4, 2006
    #13
    they did it on purpose, same with the 3G last year, i know they made it so it couldn't charge via firewire standard, but I'm not sure about the 3gs...
     
  14. thread starter macrumors regular

    Joined:
    Jun 24, 2009
    Location:
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    #14
    What!!?? Don't throw anything away! Apple should fix this! My 3GS won't even charge with the data cable it comes with when I hook it up to my car! Makes no sense!
     
  15. macrumors newbie

    Joined:
    Jun 26, 2009
    #15
  16. macrumors 68000

    D1G1T4L

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    Location:
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    #16
    There is nothing to fix. They stopped using the firewire pin for charging on iPods and iPhones. It is now on the 3rd party companies to adjust.
     
  17. macrumors 68000

    D1G1T4L

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    #17
  18. macrumors 6502

    Joined:
    Jun 29, 2009
    #18
    Have you been hiding under a rock? That was done two revisions ago. This is about 3G via 3GS (both contain USB bits).


    Laff. I could buy a new dock at that price.
     
  19. macrumors 68000

    D1G1T4L

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    #19
    Where did I say it just happened?
     
  20. macrumors 603

    Joined:
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    Location:
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    #20
    But I have a USB charger that is physically usb (as in you can use the cable that came with your phone). It won't charge the phone. It puts out 5VDC and 1.5 amps. The AC charger I have put out 5VDC 1 amp and charges the phone just fine (using the same cable). How is my car charger suppying 12VDC to the cable?
     
  21. macrumors 68000

    D1G1T4L

    Joined:
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    Location:
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    #21
    The USB charger that is "physically USB" and won't charge the phone is most likely trying to use the firewire pin.

    Is the AC charger newer?

    Think I'm understanding what you are saying......might not
     
  22. macrumors 603

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    #22
    Here is the charger I am using. I still dunno how it is able to charge over the firewire lines.
     
  23. macrumors 68000

    D1G1T4L

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    Location:
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    #23
    That charger is probably using the correct charging pins and not the firewire ones. Of course this is just me guessing. I had to get an adapter for my Alpine stereo as soon as the design change happened. With the adapter on my Nano and iPhone charge just fine.
     
  24. macrumors 603

    Joined:
    Mar 20, 2007
    Location:
    Virginia
    #24
    Yeah, my Pioneer iPod adapter doesn't work with those converters, which was partly why I got the USB charger. The sad thing is it charges my wife iPhone (1,1) just fine. Along with other USB devices that can charge via that port.
     
  25. macrumors 68000

    Joined:
    Aug 10, 2006
    #25
    The firewire/usb pins are at the dock connector end of the cable, not the usb plug end. So, if the OP is using the cable that came with his phone it should work with any USB charger (provided it's putting out the required wattage) because the cable will definitely have the correct pinouts. The firewire/usb pinout problem was only for accessories like docks, speakers, very old cables etc. that had a dock connector with the wrong power pinouts built in.

    None of this explains why his car would charge his 3G but not his 3GS - both these phones use the USB charging pinouts.
     

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