Sprint has put online some publicity in which they show how to make an iPhone function on a 4G network (Wi-max).
To arrive at this prowess, since the iPhone that does not support 4G, they have conceived an "Overdrive".
This small box is compatible with Wi-max and acts as bridge by creating a Wi-Fi network on which iPhone is able to be connected. Thus, Sprint can bring the 4G to the equipment which is not compatible and even circumvent the simlocked iPhones sold in the United States.
Beyond the customers that could be interested, Sprint especially wanted to show case its superior technological to AT&T that they had already done in the past by comparing the 3G coverage of the two carriers.
