This is an upgrade to work w/ the IPhone7 and add an eye glass holder in the front.
Area behind the holder I included a section to put in a USB hub (linked below). This will allow ease of use and portability. I also purchased a 6 inch USB to Iphone adapter and will seal the plug into the holder and make it a permanent fixture to the print.
USB Hub: https://www.amazon.com/gp/product/B075SGKN92/