Chosen Solution

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Hello everyone, i got an iPhone 4S and it was reassembled, when i plug it to pc it wont detect iPhone nothing in device manager.. But when i turn off and plug usb in, iPhone turns on whats the problem ? I was reconnecting the dock maybe 2 - 3 times no luck.. And another question, lock button, volume up, down, silent switch is not working. Thanks for answers.. :) And sorry for poor English,

A usb connector is made of even smaller connectors. One of them is power and that seems to work according to your description. Have you tried with a different cable? There could be a short in the cable, specifically on the “data” wire.

Hi. Try a different USB port on the PC or even a different PC if you have no luck with GD Solutions answer. If the phone was disassembled, go back and check your Dock to logic board connector is seated properly. I.e, disconnect it and re-attach it. You can try it with the PC again without having to put the back cover screws back in. If still no joy, another thing to try is putting the phone into DFU mode. In DFU mode the screen is blank and the device appears to be off, but iTunes detects it as an “iBoot recovery device” or similar and it can be restored in iTunes. To get into DFU mode:

  1. Connect the USB cable with the device powered on.
  2. Hold Home+Power until the device resets (about 10 seconds)
  3. As soon as the screen goes blank, release Power and continue to hold Home. You have to be really quick about releasing power. If you did it right, the device should appear to be off (no Apple logo appears), but iTunes will ask you to restore.