You sure the static resource is set to public? 

They are set to be public as well as all the JS and CSS used for the page. What else should we be looking for?

Can you describe what you mean by loading via desktop browser? What URL are you on when it works, and what URL are you on when it does not work? 

Hey Zach, I’m on the same URL. I am wondering if the issue has to do with how mobile devices handle image files …

This issue has been resolved! Because the image files were saved as zipped Static Resource files, mobile devices may have been having harder time unzipping those files? Anyways, we saved them as unzipped files and images are now being rendered on mobile devices! Yay!