How to Enter Unlock Codes on BlackBerry 8830

Note: SIM is REQUIRED to unlock the phone. SIM card can be inactive, doesn't need to active. After phone is unlocked, remove the battery, insert SIM as desired and re-insert the battery. Phone MUST be restarted to use the new SIM card.

    No AT&T/T-Mobile Usage: This is a dual-band phone, it will NOT work in North America but will work fine in Europe, Asia, South America where they use the other set of frequencies.

1) Power on   
2) Go to Settings
3) Go to Options
4) Go to Advanced Options
5) Go to Sim Card
6) HOLD ALT and press: mep2 (Please note that you will NOT see what you type on the screen)
7) It will ask you for the unlock code. Enter it and then press trackball to confirm and your phone is unlocked! Exception: If phone says Code Error and the attempts stay the same, start off with 10 attempts and still says 10 attempts after enter code, then continue with instructions, this is just a glitch on the phone.