1. Turn on the phone with a non accepted SIM Card, IE one it's not locked to
2. Enter the Unlock Code provided.
The code(s) we send you will usually be a list as shown below:
The reason we send you more than one is that different versions of hardware within the phone require different algorithms to generate the unlocking code.
Please start with the first one ( NCK ) and slowly work your way through them, ( NCK, then BO3, then BO4 etc etc )