The iPhone 4S has only been available for a little more than a week, but you can already find some apps that have been designed specifically to take advantage of the phone's new dual-core A5 processor. The same CPU that powers the iPad 2, Apple claims that this pumped-up chip delivers double the power of the A4 and can accelerate graphics speed sevenfold. In fact, the iPhone 4S is the fastest smartphone we've tested. This means even-more-realistic gaming with faster action and more fluid graphics. We found some great games designed just for the iPhone 4S.
Also new and exclusive to the iPhone 4S is Siri, Apple's voice-activated personal assistant who can schedule appointments, find you a good slice of pizza, tell you the local time in China, and more. Far from perfect, Siri is fun to use and shows amazing potential for the future of voice control. A couple of third-party apps are already integrating Siri.