While the processor inside the iPhone 4S has already been shown to have given the new phone a significant speed boost for web browsing and JavaScript benchmarks, tests on other models reveals that iOS 5 may play a significant role as well -- allowing the iPhone 4, iPod Touch and iPhone 3GS to gain a noticeable performance boost when it is released on Wednesday. In the case of the iPhone 4, initial testing has shown it catching back up to its latest rivals.
