All SIM unlock codes are tied to the particular device IMEI and are carrier specific. The request for that code would need to be made from the carrier that the phone was originally manufactured for....
You can unlock the Blackberry Curve by entering the unlock code, which is available from the network service provider. Answers.com will not help you hack a locked cell phone.
to unlock a blackberry curve 8300, firstly you have to insert a simcard to your phone ( type of simcard must compatible with its phone,exp: att phone go with att simcard) secondly, you go to...