This works for Galazy Z Fold 3 SM-F926U / Z Flip 3 SM-F711U / S22 models.
There is no refund if we deliver code but you cannot use because the phone does not prompt for unlock or if Phone prompt for MCK Code.
-First, try the Network code when the phone asks for unlock code with a different SIM, and if not working or it asks for PUK CODE, factory reset it, insert the Defreeze code (even if seems that is not accepting it, is OK) and after use the Nck code and should work.