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. :
Razer Chroma Wallpapers • TrumpWallpapers
1920x1080 Razer Abstract 2022 4k Laptop Full HD 1080P HD 4k Wallpapers, Images, Backgrounds, Photos and Pictures