How is the iPhone 4S different from the iPhone 4? I'm Very Satisfied with my iPhone 4, that i purchased last February. My voice calling works good on my Jawbone icon Bluetooth.
Well for one thing, the 4S has a superior camera in comparison to the regular iPhone 4. That's the primary reason why I'm getting the 4S over the regular 4 - it's all about that camera! Second of all, the 4S is available in 64GB. That right there is the clincher, the deal sealer for me.
It also has the A5, and of course Siri. I'm sure iOS 5 will run pretty well on the 4, and ok on the 3GS, but it will definitely run the fastest on the 4S out versus the other devices. like rocksintheattic said, the camera is much, much better. the 64GB option wasn't a huge deal for me, I don't have a need for that much space, 32GB is sufficient, plus I wouldn't pay more than 300 for an upgrade, I would've gotten it it was 200 for 32 and 300 for 64.
For me, I have two lines, my phone and my MiFi, and back in february I used my MiFi's upgrade to get the iPhone 4, and then now my phone is eligible for an upgrade. Without the upgrade I probably wouldn't be getting it because I can't justify paying ~$700 for a minor upgrade. I use my camera a ton, I've had my iPhone 4 since february and have taken 3,000 pictures on it, so it's going to be nice to have the upgraded camera. Another reason is the A5 processor. When iOS 4 came out, it made the iPhone 3G ridiculously slow because of all the new features it had, and a lot of customers were upset because it was so slow. By keeping the iPhone 4, I was afraid that lets say when iOS 6 came out or even iOS 7, my phone would basically be unusable because of the slower processor compared to the iPhone 4S's processor. With the iPhone 4S, it should last me a while, since the dual core processor is amazingly fast.