Hi Rene, sorry to send you a private message but I figure it might be the fastest. In March you posted about how you could access the AT&T network with an Xperia S. Before I found your post I couldn't access any mobile network, but after following your steps I can now access EDGE but nothing more. Do you know what I can do to access 3G? (The previous phone this SIM card was attached to was a 3G phone). Thanks!