Knowledgebase - AT&T Nokia Lumia 900 Invalid Code Message

AT&T Nokia Lumia 900 Invalid Code Message

If the Unlock Code provided is asking saying error, please continue to enter the unlock code provided until the phone asks for the "PUK" code. Please do not worry about the attempts remaining. Once you have diminished all your tries, the phone will ask for the PUK code and this is where you enter the Unlock Code.

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