If anybody know the full information about Wi-fi and Edge what are all the advantages of wi-fi and Edge

EDGE, or Enhanced Data Rates for Global Evolution, is a 3G technology that delivers broadband-like data speeds to mobile devices.

Wi-Fi, which stands for wireless fidelity, in a play on the older term Hi-Fi, is a wireless networking technology used across the globe.
New wifi technologies will extend range from 300 feet (91.5 meters) to 600 feet (183 meters) and beyond, while boosting data transfer rates. Most new laptops nowadays come equipped with internal wireless networking cards.

-V.Vadivelan