iLounge has completed its initial 3G cellular data speed comparisons of the iPhone 4S across all of the available U.S. carriers. As seen in the graphic below, the data speeds seen on AT&T’s HSPA network—between 2.41Mbps and 2.99Mbps down, 0.68-0.81Mbps up at our Buffalo, NY test location—far outpace those seen on either Verizon’s or Sprint’s EV-DO networks in the same area. Between the two CDMA carriers, Verizon fared…
