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Wireless Speeds: Big Improvements In 802.11n

Apple iPhone 4S, Part 1: More Horsepower, Better Hardware
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So long as you have enough reception to sustain a phone call, the antenna issue takes a back seat. After all, you're going to be using Wi-Fi whenever possible to avoid taking big chunks out of your cellular data plan as you browse the Web, download apps, and check email. In that case, wireless performance becomes more pertinent. And, in this discipline, the iPhone 4S excels.

Our standard wireless test consists of the following two scenarios:
•    Five feet, line-of-sight: The wireless device is set five feet from the router without any obstructions.
•    20 feet, no line-of-sight: The wireless device is set 20 feet from the router and there are three drywall obstructions in our testing environment that reflect the possible degradation you might see in an indoor environment.

Apple's iPhones don't support 5 GHz connectivity, probably because that's simply require another radio sucking down power. However, that functionality really isn't missed because we see a three-fold jump in throughput when the iPhone 4S is connected to a 2.4 GHz 802.11n network.

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