I realize that the reason the usb host port is unpowered is because the phone runs at something like 3.6 volt, and powered usb requires 5 volt, which would add the need for dc-dc converters. So, I've got an idea... What about adding a power tap next to the usb port, running at the phones native voltage? This should only be a matter of adding an additional connector (and possibly protection circuitry). Then, an adapter cable can be manufacured seperately that has a usb mini-A and power tap connector on one end, and a full-sized usb-A on the other, with the dc-dc circuit inbetween? This way, it leaves the potential for powered external devices without complicating the phones circuitry. Of course I realize that can't be included in the first production run, but possibly an idea for the followon product.
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