Have you typed overtyped your sim code incorrectly and you were asked to input your Puk code. If you are unable to find the Puk code for your Sim, then the Sim card would be blocked. But don't worry with this tutorial I will teach you how to unblock your Sim with using your PUK code
How To Unblock A Blocked Sim
This process is the easiest way to unblock abSim that has been blocked due to incorrect pin.
First,you remove the blocked.Sim card from the phone, off the phone and insert the blocked Sim back into phone.
Next you switch on the phone and go to Phone section where you can call and dial *22233421#
Now press the pin you wish to use.
You have successfully unblocked your blocked Sim.
If you encounter any problem do so to ask in the comment box.