@Maria16 if you just inserted your PM SIM into your phone for the first time and it asked for a SIM unlock code then it's locked to your previous provider and you have to contact them to get it. Dial *#06# on your phone to get your imei number. They will ask you for it.
If you had your phone for a period of time, you lock yourself out and it asked for a puk code. You have to contact the moderators and ask them for it. There are 2 ways to contact the Moderator Team:
Keep an eye on the envelope top right of your screen. The mods answer will show up there. Stay safe. Welcome to the community.
@Maria16 you may need to contact Public Mobile. The SIM pin code for all PUBLIC SIMS defaults to 1234. But it sounds like you may be a new customer and your phone is locked. Contact your previous carrier and give them your IME# They can unlock your SIM from there.
Dial #*06# to get your IME#
What phone do you have? If it us a samsung you can call samsung canada and also get it unlocked there.
edit: thats weird I didnt see any other responses???