I made a Razer wallpaper that is 1920x1080 but also fits nicely on a mobile device like a iPhone 12. I have added a example of it applied to a phone. :
Technology Razer (), 720x1600 HD phone wallpaper | Pxfuel
Razer Abstract 4K Wallpaper iPhone HD Phone #5590i
Razer Mobile Wallpapers - Wallpaper Cave
Razer Logo Neon Lights Background 4K Wallpaper iPhone HD Phone #4850f