This is the Official Wallpaper 06 of 15 for Samsung Galaxy S9 and Samsung Galaxy S9+ with dark blue polygons. One of my favorite background for both Samsung Galaxy S9 and S9+. This wallpaper was originally designed for both S9 with 1440×2960 pixels resolution. This resolution is perfect for S9 which has 5.8″ screen size and Galaxy S9+ which has 6.2″ screen size.
So, feel free to get this wallpaper in original size. Here are all 15 wallpapers for Samsung Galaxy S9 and Samsung Galaxy S9+: