How do I fit my game resolution to mobile portrait?

I have set the resolution and rendering in properties. However when I export my game its resolution is still not render properly. I want the game resolution is portrait and fit with the mobile screen.

This is the current result.

This is the properties that I set.

I would look up your phones resolution, and set it to that, as well as in the game resolution resize mode, i would set that to keep resolution no matter what.