Figma prototype screen with no background


Lot’s of designers are showing their designs within phone devices on their portfolios. I am trying to do the same without bringing a background in. I am taking a screenshot of the prototype screen with the phone device, but of course that brings in the background with it. How do I just bring in the phone with the design and no background. I am wondering if there is an export function for this in Figma? Is there a specific file format I would export it as?

Thank you.

Mark Behrmann