NEXTEL PUK code Retrieval NEXTEL SIM card is equipped with an unique PIN code and a PUK code for each customer b default to enhance security and privacy of NEXTEL customers. If the PIN code is entered wrongly for 3 times , then your NEXTEL SIM card will be locked further and prompt you to enter the PUK code to unlock the NEXTEL SIM card. Note that, If you enter PUK code wrongly for 10 times, then SIM will be deactivated and you have to pay for new SIM card. NEXTEL PUK code can be obtained by following methods 1.Through Welcome mail : At the time of buying the new SIM NEXTEL SIM CARD, you would be provided a welcome mail and SIM card box. THe PUK code information might be printed in either of the mail or SIM card box. If you could able to find the PUK informaiton , you can note it and enter it in the locked mobile phone carefully. 2.Through Online Nextel Official Portal If you have already registered with online portal of NEXTEL , you can login with your user