The iPhone 5 comes equipped with an 8 megapixel rear iSight camera. It's a great camera, as long as it's functioning properly. However, if you're experiencing issues with your rear camera and you're out of warranty, replacing it yourself could be a lot cheaper than a new iPhone. Symptoms could include a black screen, hazing in images, spots showing up in photos, or lines through photos. If any of these problems sound like something you've experienced, it may be time to DIY replace your camera.