Nokia Lumia 900 (Unlock Code Fail) Troubleshooting

Nokia Lumia 900 (Unlock Code Fail) Troubleshooting

    PUK required


    Note: This method is used when NCK code fails “Network Unlock Request Unsuccessful”. Make sure the code is verified as correct before attempting this method. You can watch a user attempt it here http://www.youtube.com/watch?v=8SO5ZXQy1zM


    1) Power on the phone with not accepted sim card
    2) The phone will display; Enter PIN, 10 Attempts Remaining
    3) Input the unlock code until, 0 Attempts Remaining
    4) The phone will display; PUK required
    5) Input the Unlock Code & Press Enter
    6) Phone is now UNLOCKED!

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