These are PSD mockups. You can replace text and image in the smart object and get what you want on the picture. You’ll need Adobe Photoshop to use mockups.
My PSD files usually contain many layers for your convenience. A mockup can include color effects layer, light leaks layer, transform and distortion, and a layer to show/hide copyrighted buttons or element on smartphones, tablets or something else.
Read more about mockups and how to use them