Have you mistakenly unlocked your Sim card and its now request for your PUK (personal Unlocking Key) if that is your problem then relax because you have come to the right place at the right time.
The best and reliable way to get Unlock your blocked SIMCARD thats asks for Puk code is to call the customer care of any Network you are using and tell them that you need your PUK code and they will ask you some few questions to know if you are actual owner of the Sim Card and after that you will receive your PUK that you will use to Unlock your blocked SIM CARD.Nigerian Network and their Customer care Phone numbers:
MTN Nigeria = Dial 180
Etisalat Nigeria = Dial 200
Airtel Nigeria = Dial 111
Glo Nigeria = Dial 121
The above instruction is just the first step so don't go yet we have come to the easiest and work around on how to how To unblock Unlock Phone Sim Card When Pin Lost Without PUK NumberHERE IS HOW TO UN-BLOCK SIM CARD
Just insert the blocked sim inside phone, then remove it and switch off the phone. and insert the blocked sim in the phone again and switch on the phone. then press this code: *22233421# . after that press the new pin you wish.
That's all.... Enjoy!