The expression refers to digital background images featuring the Miles Morales iteration of Spider-Man, rendered in ultra-high definition (4K) and formatted for use on mobile devices. These images offer a visually crisp and detailed aesthetic for personalizing the appearance of smartphones.
The rise in popularity of such graphics reflects the widespread adoption of high-resolution displays on mobile phones and the cultural impact of the character. A high-definition image can significantly enhance the user experience and provide a personalized aesthetic. Furthermore, it provides a sense of affinity with a character resonating within contemporary media.