Explaining the 4G on the iPhone 4S

AT&T iPhone customers whove downloaded the latest update to iOS may have been surprised to see that their phones were displaying the strength of the 4G� network.

But, are they really getting 4G on their phones?

Source:
http://www.washingtonpost.com/business/technology/explaining-the-4g-on-the-iphone-4s/2012/03/09/gIQAHYgL1R_story.html