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In-Depth on Wi-Fi > Tweaking Your Network for Faster Performance

Tweaking Your Network for Faster Performance

The iPhone 4 and the fourth-generation iPod touch are the first models in their lines to have functional 802.11n networking; the third-generation iPod touch apparently has an 802.11n chip, but that faster mode isn’t enabled.

While 802.11n can support two different frequency bands—2.4 gigahertz (GHz) and 5 GHz—Apple opted to include just 2.4 GHz support in the iPhone 4 and fourth-generation iPod touch. But you can still take advantage of 802.11n’s improved speed, and rearrange a home or small-office network to boost network performance.

Note: The original iPhone, iPhone 3G, and iPhone 3GS, and all iPod touch models before the fourth-generation touch use 802.11g networking in 2.4 GHz.


The two frequency bands allow greater flexibility: the 2.4 GHz range used works over longer distances, but it suffers from interference from nearby networks, baby monitors, microwave ovens, and Bluetooth devices. The 5 GHz range is more effective over shorter distances, offering twice the speed or greater on the same device used in 2.4 GHz.


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