The only major fault I can find with the iPhone 4 is the flat back. Seems innocent enough until you realize that the curved back of the old iPhones kept their camera lenses clean and scratch-free. I started noticing a few months ago that my phone's camera wasn't taking good pictures like it used it. They were less sharp and had fuzzy white edges. I soon realized that it wasn't the camera - it was the backplate. The plastic that covered the camera was scratched terribly, which was causing all the photos to be blurry. So my first thought was "Well, I'm out of luck. They won't replace it for a scratched camera." Then I started Googling.
Turns out that while the old iPhones opened by lifting the screen out of the housing, the iphone 4 opens by popping the back off and that replacing the backplate was a quick, easy and affordable fix. I ordered a new back cover from Amazon ($6.75 including shipping.) It even came with all the tools I needed!
When it came in I just popped the old one off and the new one on! Now it takes beautiful photos again! Here are my simple, step-by-step instructions on how to replace your backplate.