It's no surprise that the iPhone 4 is not only a popular smartphone, but also a well-liked digital camera. The 5-megapixel back camera doesn't have the highest pixel count of all smartphone cameras, and the specifications of that camera don't hold a candle to many of the digital SLRs and point-and-shoot cameras that are on the market. What the iPhone 4 does have going for it is an array of apps that make sharing those photos with the world insanely easy.
The ability to share photos with social networks is w
