My 2021 SV Plus has two USB ports (labeled 1&2). I read somewhere in the multitudinous manuals that "more features" are available using USB 1 (type C). I'm using port 2 (type A), and only a few of my iphone icons show up. I've ordered the "lightening" to USB C cable and will report any differences. However, does anyone have experience with what "more features" there are - and how to better access them?