If you are bringing your cell phone to Canada, you can purchase a yearly phone plan or choose a 'pay-as-you-go' option (the most popular). You will get a chip for your phone and can choose to buy a text/talk or text/talk/data (internet) plan. Costs can range from $20/month to $50/month (or more, depending on how you use your phone).
Major mobile companies in Canada are:
You can find stores or kiosks for these companies in most shopping malls, and can purchase phone time at grocery stores, stationary stores and other outlets.
To save money, make sure to use the free wi-fi at all of the UCDSB schools (we call it BYOD service). Free wi-fi is also available at many coffee shops and all local public libraries.