transfer contacts from one phone to another requires the phone to be powered up.
the screen can be all white or blacked out as long as it stays on.
now there are some phones that require a setting in the menu to be changed and if you cant see it,
then you cant connect for transfer.
also remember the way the machine reads the information is through the port so if there is damage it also will not connect,
but dont think because it charges it can be read for information hope this works out for whoever may need it.