iPhone 4S: Faster, More Capable, and You Can Talk to It.
Reviewing iPhone 4S at TechCrunch, columnist MG Siegler finds much to like, including its faster speed, improved camera, iOS 5 with Notification Center, and Siri, which he calls “the true killer feature of the device.” He adds: “The iPhone 4 was a great product. The best smartphone ever made. Now it cedes that title to the iPhone 4S.”