What does it mean when a phone is blacklisted?
A phone's IMEI may be blocked by the original issuing carrier for any number of reasons - for example having been reported stolen.
This means that your device will not be able to work with any North American carrier network.
You can use the DeviceCheck Canada lookup by entering a valid IMEI number to check whether your phone is blacklisted.
How to find your phone's IMEI:
Enter *#06# (Star, Number, Zero, Six, Number) into your phone's dialpad. Don't press call.
The phone's IMEI will be displayed - it may take a few seconds.