Most of these are just some of my wallpapers rotated 90 degrees haha. For the longer desktop-y looking ones, they're all above 1080p so they can be cropped and/or rotated. Enjoy!
I am attaching a sample of 10 wallpapers in 1080x1920 pixel size from my personal site. I have a new Galaxy S4 and found it difficult to find HD backgrounds in the correct resolution for my smartphone, so I started putting them online on my site - wallpapersforgalaxys4.com Feel free to check it out and use my images.