I finally upgraded my iPhone from 3GS to 4S a few weeks ago. I've been trying my hard to resist the temptation to upgrade my iPhone when iPhone 4 came out last year. I couldn't get it because I was stuck with my 2 years contract at that time. When iPhone 4S came out, I still had a couple of months left in my contract. Luckily, Softbank had a free upgrade plan from 3GS to 4S. And that's how I got my iPhone 4S.
I always wanted a pocket camera that I could bring with me everywhere I go. I don't want to bring my DSLR with me because it's heavy and I definitely couldn't bring it to my work. I could get a pocket camera, but a camera with a good quality, reasonable price, and light weight is pretty hard to find. The iPhone is the answer to that. I love the idea of using your phone as a camera which means I could bring it with me everywhere I go.