What will i do if i forgot my SIM PIN?
You can recover your sim pin by typing in the default pin code set by the carrier, re enter the default pin code until it displays the Puk code request. You can visit http://www.ehow.com/how_7339286_sim-card-pin-recovery.html to get the rest of the steps.
Call your wireless service to reset it.
call the customer care of your sim and they will give a new pin