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: “PIN UNLOCK”, Now enter the code and press OK.
4. - Your cellphone will indicate: "The operation was successful", becoming permanently unlocked.
"Very good job! thanks Movical"
"My Samsung was unlocked by Device Unlock app. Thanks!"
"My ZTE was unlocked! thanks"