Smartmockups App lets you create stunning marketing images without calling your designer. You don't even need any graphic software such as Photoshop or Sketch.
Facebook supports a diverse audience around the world and an equally diverse set of devices. To emphasize that in our design mocks, we redrew a range of devices to show the global diversity of the people using our products. Each device comes with a bitmap of the device (with and without shadows) and the original Sketch file for that device.