Fourth generation iPhone. Repair is straightforward, but the front glass and LCD must be replaced as a unit. GSM / 8, 16, or 32 GB capacity / Model A1332 / Black and White.

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iPhone 4 dock connecter is currently drawing too much power

When i connect my iPhone 4 is says it ""Because a USB device was drawing too much power from your computer, one or more of your USB devices have been disabled"

I order a new Battery/Dock Connecter but still won't work :(

Answer this question I have this problem too

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Sonny788, is this somewhat like the error you receive "A USB device is currently drawing too much power." ? Just trying to clarify.


Yes, When i connect it to my Mac it says this "Because a USB device was drawing too much power from your computer, one or more of your USB devices have been disabled."


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Sonny Dickson, I was just wondering if you tried to charge your iPhone on a AC wall charger first and see if it gets to charge that way. There is the possibility that the iPhone is drawing to much power. Just for reference, the USB port standard specifies a capability of ~400mA current for each interface.Keep in mind that USB ports do not have a lot of current at best, but practically all USB interfaces provide 2 USB ports per. So your device must require a total of less than 400mA. You could try a powered hub and see if that works. Also try some other USB devices and see if they still function on your computer. If you have no other devices plugged in at the time then that's certainly beginning to sound like a problem with the device in question. Try, as suggested above, other devices in the same port. Also try your iPhone in another port. I am NOT a Mac person but if I remember right from reading a lot about it on here, you could probably have a look in the System Profiler to see which USB device has been disabled and that could help you determine which device has broken. If no other USB device is giving you the error, you should take a look at the dock connector of your phone to make sure that there are no broken, bend or corroded pins, try another USB cable. After that it may be the battery with its charging circuit that draws to much power. You may have to replace that. Hope this gives you a bit more insight and helps you in finding out what is wrong with your device. Good Luck.

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Thank you for accepting my answer and I hope things will work out for your iPhone. Good Luck


Oldturkey03, I order my iPhone Parts last Week i should get them tomorrow :)

I Order a Apple iPhone 4 Battery and Dock Connecter for iPhone 4, Hope i can fix it :)


I am sure you will do well. Just take your time, study the instructions and be comfortable with the. A uncluttered quite area helps too :-) Anyhow, just let us know how it is going and if you need further assistance, just ask. there are a great bunch of iPhone guru's on here that are always willing to help. Good Luck


On USB 1 & 2 specifications there is no minimum amperage requirement (I have not looked into 3 yet). It only needs to have 5 volts and is not allowed to carry over 900mA. This specification is designed to carry data not power devices. True, many manufactures provide enough amperage to power devices on some of the USB ports (usually the ones in the back on PCs), they are not required to. Most Apple laptops only have one port capable of powering an external device because of how they have the keyboard, mouse & wireless piggy backed into the USB hub. If any combination of devices on a single USB Host is drawing to much amperage you will get that error message.


Hey, Today i just got my iPhone 4 Parts and it still comes up with that error it has new battery plus Dock Connect and it still won't work, Is it something to do with the Headphone Cable or Rear Speaker Part


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