Should I switch to iPhone 4S from iPhone 4?

iPhone 4S vs iPhone 4

iPhone 4S has been released and it has exciting new features as expected. Now, what should you do? Should you upgrade to iPhone 4S or use the iPhone 4. Id you are thinking about buying a iPhone, you need to know which one is better overall. And if you have bought iPhone 4 recently and thinking if it was a right choice, you should compare the features to see if you really need this.