I still have my iPhone 4 and when I use an app to test wifi speeds I get 20-22mb downloads using a server in the same city as me (San Francisco.) Using an app on the 920 to test wifi speeds I get 13-15MB but the server is in Los Angeles so that may impact the speeds. I get different readings from different apps but overall, the connection on the 920 is good and I don't feel like it's slow at all.