In this video, we learn how to use the desktop/SMS background app on the iPhone. First, you will go to your photos and then go to any photo you want. Then, press the box to use as wallpaper. From here, you will see a left "i" and a right one. Choose which one you want for your SMS or your desktop background. From here, go back to your springboard and it will be there on your screen! You don't have to re-start your phone to do this, it's just that simple. To remove it, go back to your photos and then go to the same picture. Deselect it and you're finished.