How to unlock blackberry 8310

Using the unlocking code is the best method to unlock the Blackberry mobile.In the site http://www.mobile-unlocker.com/blackberry-8310/rs2wp9/
You can get the unlocking code at low cost.

If it is a Network unlock code you need to contact you're service provider.
If it is a Keypad lock enter wrong password for 10 time's, Your Handheld will get wiped out and it will ask for the reset password enter the new password and remember that. (In this procedure you're DATA will be wiped out no DATA will be available in your Handheld)