several people asked if you could use the Viltrox DC-V1 camera monitor with their iPhone or Android. I wanted to know as well, so I bought a usb-c to hami cable and tried it out. Once you get into an app that rotates (like browser), then you can go back to camera and it'll rotate to landscape mode on the Viltrox monitor and be nearly full screen. If you turn the phone to portrait, it'll center the content in the screen by default. After a lot of trial and error, I learned if you start a video in landscape and then hit record, then you can turn it to vertical and it'll preserve full screen vertical on the Viltrox. It's a hack, but it's better than nothing.