You can store your downloads in your account when you signup!
Use this white galaxy phone that has been left on a leather couch to display your app mockup. The galaxy phone holds an image of 1080x1920px in portrait view. It is sitting on grey leather with white stitching. This simple backdrop will fit well with any style. The light is focused on the galaxy phone and your mockup will be highlighted.
Drag & drop not supported, but you can still upload via this input field: