[R thorn]

Hi can anyone help me?

I recently unlocked my blackberry torch, so I could chnage to the orange network, which the phone is compatable with. My network is turned on, and showing signal, and I can still brows the internet if I'm connected to wi-fi. But no matter what I do I cannot send or receive txt's or make phone calls, because it says no network available, but there is as I'm showing a signal and EE (who have recently taken over orange)

Anybody have any advice?