Despite the fact that it looks identical, the iPhone 4S is significantly different from its predecessor. To begin, it offers better performance without a big battery life penalty. Plus, we uncover display differences that Apple didn't bother to mention.
Camera Quality: Outdoors, Night Lighting
There's a huge difference between these two phones at night. The iPhone 4S does a much better job of handling lens flare and poor lighting conditions at the same time. The result is a substantial jump in image quality.