Can I use incompatible charging devices on the 3G?

Discussion in 'iPhone' started by Cubsfan, Aug 26, 2008.

  1. Cubsfan macrumors member

    Jun 19, 2007
    So I have an FM transmitter that the 3G flags as being incompatible. That's fine, but the FM transmitter part still works. Will it do any harm to have it plugged in so I can use the FM transmitter (knowing that charging won't work)?
  2. Phil A. Moderator

    Phil A.

    Staff Member

    Apr 2, 2006
    Shropshire, UK
    Shouldn't do any harm at all. There are two types of incompatible warnings: The one that says it won't charge is just that - the accessory will still work but won't charge the iPhone. The second message (and the one that was also present on the original iPhone) is purely informational and is basically warning you that you may get some sound interference from the phone radio on the accessory (the GSM buzz). Either way, your phone shouldn't be damaged by using them
  3. TEG macrumors 604


    Jan 21, 2002
    Langley, Washington
    It should work fine.

    I get it with my iTrip Auto, but it charges and plays fine for me.


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