I've been trying to render a small project (2 minutes) so that the movie fills the screen on my phone. I've chosen the largest projects sizes (3840 x 2160) and also those half that size down to 1080 X 720. Also various formats. Ten or 15 times... and the resulting movie fills about half the screen on my phone. I've looked at the manual, several you tube tutorials.
I'm using Movie Studio 16 Plantinum. Does anyone have an idea what I might be doing wrong?