I just wanted to know - I had an iPhone I recently sold and I needed a phone to use for a month and I got a BB 8700c. I'm on AT&T and I want to know, if I put my iPhone SIM in the BlackBerry, will the unlimited EDGE data plan that is attached to my SIM allow me to use data on the BlackBerry? I put the iPhone SIM in and I went to use the "Cingular Browser" on the phone and it repeatedly gives me "Unable to open a PDP Context to the following APN.." error.

Is there a way around this so I can use the browser or do I need a blackberry specific data plan?

Thanks very much for any information, sorry if I am missing something, I'm a newb to blackberries. Any help much appreciated.