1.Your GSM Blackberry can be unlocked - No matter what GSM model you have on any network, there is 95 % success rate using professional unlocking service to unlock your model. Just because you read that people can not unlock your Blackberry, does not mean it can not be done by anyone. Do more research as you did to get here and you'll get it done. CDMA can not, we'll talk more about that later.
2.Give yourself time - Unlock your Blackberry in advance, depending on your network, it can take up to 10 working days to unlock your phone . Especially for international networks outside North America. At that time this was written here are some examples of time periods. Rogers Blackberry Unlock (0-2 business days), Cingular Blackberry Unlock (1-2 business days), T-Mobile Blackberry Unlock (1-3 business days), Vodafone UK Blackberry Unlock (1-3 business days), other network vary, you should check Global Unlock website (fastest possible method uses only)
3.GSM vs. CDMA - BlackBerry comes in two different technologies. You can only unlock GSM Blackberry (Blackberry networks like T Mobile Unlock, unlocking, Cingular Blackberry Rogers Unlock Blackberry Vodafone Unlock Blackberry). You can not unlock CDMA Blackberry (Sprint, Verizon, Bell, Telus). Outside of North America 90% of the GSM network and the success rate with our services is 95% to unlock blackberry phones. Blackberry recently introduced Dual CDMA / GSM, at this point come unlocked, but the frequency seems you can only use it overseas.
4.How to unlock? - When Unlocking, always use the unlock code - This is the simplest and safest way to unlock the phone. You can connect to the servers, but with the design of the Blackberry strongly prefer codes for two reasons. First, if you have a password or IT security password on your phone, you will need to remove it before unlocking. Second, use the proper code to unlock, you can not damage the phone, because there is nothing hooked to the phone. I would suggest if you want to pay for smaller (take the risk of problems) on older models. Newer Blackberry can not unlock the software.
Good useful tips on unlocking a BlackBerry. I unlocked my BB using unlock code. I got the unlock code for my BlackBerry from www.Mobileunlocksolutions.com at affordable cost.