I have phone that is my brother in laws. He can't get the pics off it. He bought an iphone and wants to put the pics on his computer from the DI. I got the pics off the micro sd that was easy but the device won't act as a usb hub. How do I do that ? when I plug it in it says that its can't be found on my mac. I tryed the pc and same thing. I need to get the pics off the hardware of the DI. He doesn't have a file program installed and the cell service has been turned off. help.