How to Enter Unlock Codes on BlackBerry 7105t

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.

1) Power phone on and turn off the radio (Turn Wireless Off option)
2) Go to Tools
3) Go to Settings
4) Go to Options and select Advanced Options
5) Go to SIM Card
6) Type "MEPPD" (please note that you will not see what you type on the screen)
7) HOLD ALT and press mepp2
8) Enter the Unlock Code
9) Press enter (press on Trackball)
10) Reboot device. Device is now unlocked