Could I activate the sim card for a week then transfer the my old phone number?
the answer to this question is no since you will not be able to transfer the number to this SIM card if you activate it without first effecting the transfer.
When you transfer your current phone number to Fizz, your line must still be active with your current/previous provider. We will disconnect your old provider during the activation process.
To keep your number and transfer it to Fizz, you will need the account number for your current/previous mobile provider (you can find it on your bill).
During the activation process, here’s how to keep your current phone number:
Important to know
You're welcome! : )