After experimenting, users were able to determine that the issue is caused by the 'Stretch' setting when configuring the desktop background. Wallpaper ... just show a blank black screen.

The type of background of your desktop might be set to Solid color and black or the wallpaper you have selected might be corrupted or missing. You might even see black background if the Windows ...

The problem is that your iPhone won't let you include blank space in a wallpaper — the selected ... Tap the photo so the background turns black. 4. Take a screenshot of the photo.