I have an HTC Fuze and an iPhone that I use. The HTC Fuze is the phone that is on my account (its IMEI number is on my account). I bought an iPhone and put the SIM from my Fuze in the iPhone and started using it. I have PDA Personal so I'm not worried about data charges. When I put the SIM card in my Fuze after using my iPhone, I get the following error message when using Opera: "The Remote Server refuses to perform the request. This address is not available." And i get "403 Forbidden" when trying to use Pocket IE. I have installed the Disable Proxy .cab file that changes the registry entry and it still does not fix anything. I have also tried putting my SIM in other AT&T PDAs as well as non-smart phones and I still get the same problem. The iPhone works just fine without any problems. Any help would be greatly appreciated!