Memory card locked solution

I USED TO FULLY RESET THE PHONE, UNFORTUNATELY, THE MEMORY CARD WAS INSERTED IN THE PHONE, AND LASTLY IS WAS NOW ASKING FOR UNLOCK. CODE,
:(THE MEMORY CARD WAS NOT LOCKED IT AUTOMATICALLY LOCKED IT SELF WILE RESTORING THE PHONE AND SO I DON'T KNOW THE CODE.

:confused:I AM REALLY CONFUSED, WHAT TO DO TO MAKE THE MEMORY CARD WORK AGAIN?