1. - Turn on the handset on with a SIM card not accepted by the device (your new network operator)
2. - If the card has a PIN number, enter it and press OK.
3. - The device will prompt: “Network lock”, Now enter the code and press OK.
4. - Your phone will indicate: "SIM network unlock successful", becoming permanently unlocked.
"Work great only took them like 2 days my phone was unlocked within that period I was very impressed."