It is used for Local Area Networks. Wifi transmits data at 2.4 GHz and 5 GHz radio frequencies which is more stable and higher as compared to 3G networks. … Difference between WiFi and 3G Technology : S.NOWIFI Technology3G Technology4.WiFi is for Local area network based applications.Whereas 3G is for Wide area network based application.Difference between WiFi and 3G Technology – GeeksforGeeks www.geeksforgeeks.org › difference-between-wifi-and-3g-technology