When creating mockup images for your product presentations, finding cool device images to put your screenshots in can be challenging. Especially, when you are looking for license free images that can be used commercially. Good thing, that Facebook now opened their device mockups to be downloaded for free.
While Facebook has redrawn and shares these assets for the benefit of the design community, Facebook does not own any of the underlying product or user interface designs. Please do not repackage and redistribute these as your own.