How to deactivate fizz sim card?

This is the full guide

https://fizz.ca/en/faq/unsubscribe

Remember the SIM can be reused!

• 
  

  Cancelling WITHOUT keeping your number

  
  

  Log into your Fizz account to do it yourself:

  1. Go to My plans in your Fizz account.
  2. Select the plan you wish to close.
  3. Click on Manage.
  4. Select Unsubscribe to begin the process.
  5. Select the credit card to which you will transfer any remaining funds in your Wallet.
  
  
• 
  

  Cancelling and KEEPING your number

  
  

  To keep your phone number at a new provider, first and foremost, DO NOT cancel your current Fizz service — only active phone numbers can be transferred to a new provider.

  The process is simple: tell your new provider that you intend to keep your number. Your new provider will contact Fizz to disable your Fizz plan. The cancellation will only come into effect after your new provider has retrieved your phone number.

  Your new provider will ask you to identify your Fizz plan to confirm your number transfer. Before you call your new provider, have the following information handy:

  • Your Fizz account number: To find your account number, go to My Plan, then go in Manage. Beneath your telephone number you’ll see your 8 digits account ID starting by 22.

  OR

  • The IMEI number for the last phone you used with your Fizz plan: This is your phone’s identity card; it also allows us to identify your plan. Your IMEI number can be found by dialing *#06# in your phone’s keypad.