Failure is as much a part of greatness as success
Here are over 100 backgrounds from the many Harry Potter movies that will nicely light up your iPhone 4, at 640 x 960 pixels in size.
Please click on the background you want to view, then download it after it appears at full size. I don’t know how to download it cause I’ve never had an iPhone. 🙂
Here are some widescreen wallpapers from Harry Potter 7, the Deathly Hallows Part 2, at 1920 x 1080 pixels in size. They have been slightly customized from promotional graphics widely available to have more punch in their colours and annoying logos removed.
Please click on the wallpaper you want to view, then right click after it loads at full size if you want to download it (PC instructions, not sure what you do for Mac).