Images Missing From Mobile Only Viewing of Website

I wanted to pass this along to anyone who may be having the same trouble. I spent WAY too much time trying to figure out how to fix this.

The problem is when viewing the site on a mobile device ANY image on a page or post shows briefly then disappears leaving the broken link box icon.

The problem is that your theme setting has a selection ticked (checked) for the display or retina images and you don’t have any defined!

Check this setting, clear any cache you may have and everything will be back to normal.