I currently have an iPhone 4. I love it! I was thinking about upgrading it but I heard that the iPhone 4S battery life is not good. When I went to the Apple Store, I was using the 4S. I love Siri! It is a lot of fun to use and could probably help me out a lot. Is it worth upgrading my iPhone 4 to an iPhone 4S or no? Please give me some feed back. Thanks! for life!