To unlock your blackberry, you need to have an unlock code, also known as network unlock code or MEP code.
To obtain your unlock code you can either contact your service provider, or you can always search for an unlock code vendor from internet.
Care should be taken in selecting the vendor with which you buy unlock codes as more than half of the vendors available on internet are frauds and cheats. You can always distinguish between a good company and bad company by its payment method. A trusted vendor always uses payment gateways such as PayPal or google checkout. Look out for the ratings and user reviews for the company on the payment gateway page. If the ratings is above 4 out of 5, then the company highly trustworthy.
One of the pioneers in unlocking business are unlockgenie.com
. You will get the unlock code for any Blackberry model locked to any network, any country, instantly (if you are online with customer support's online chat) or within less than 4-8 hours via e-mail. The customer support they have is extra attentive to your needs and delivers you the unlock code in the chat-box, instantly after placing your order if you are in online chat with them.
The site is safe as all money transactions are carried out by google checkout. It is this reason which prompted me to try this site as I trust google, for they will never support a fraud or a cheat site.