I for some reason picked up this cable for my NEX 4100 and it showed up late after install. IS this something u guys use for the I phone connection? I Dont think i need it if i have the HDMI cable hooked in already..Any advice on this?  Thanks

HDMI Interface Adapter Cable for iPhone 5 5S 5C Based on Pioneer CD-IH202

If you already had the USB cable for the iphone, then you don't need these, they are very high priced for what they are... return them for a refund.