Filed under: iPhone I suspect many people were very happy to see that the iPhone 4 was listed as having 802.11n. I know that I was. I have a dual-band network at home which separates 802.11n from 802.11b/g, and that's made a huge difference in transfer times. But there's also another benefit of 802.11n: it can use the 5GHz frequency band instead of the 2.4Ghz. Without going into too much detail, most (but certainly not all) of the benefit of 802.11n comes if you use 5Ghz, because it isn't cluttered with other devices like 2.4Ghz is.
So imagine my dismay when I went to the iPhone 4 technic
