NetComm NTC-990 - Manual (Page 17)

4.3 Enter PUK
If after three attempts you are requested to enter a PUK code:
You will need to contact your carrier to obtain this number.
Your carrier will issue you a PUK code to enable you to unlock the USIM and enter a new PIN code.
Enter the new PIN and PUK codes, press save .
If you have entered the PUK correctly you should see the following message:
Revision 1.55 NetComm Limited
March 2009
16