Waiting

I kept my old phone with the express purpose of getting it unlocked for use when we go across the line into the US.
Got the unlock code this morning but the instructions say I must insert a non-network sim card before using the code.
Don't have one of the right size , do I?
Threw them all out when we moved, didn't I?
Ordered a sim card, didn't I?

I have to wait ...Until tomorrow