@Taozi - more details would be helpful here. Are you a new customer or have you been one for a while and this is an all of a sudden thing? Did you port your number over to Public? Can you receive calls and texts? What about data, does it work?
Anything else could be helpful for us to troubleshoot. Some things to try:
*turn off your phone, leave off for a few minutes, then reboot
*removing your SIM, then reinserting it
*go into airplane mode, then going back to regular mode
*perform a reset network settings on your device
*try your SIM card into another compatible phone...this could rule out a device issue/setting.
*manually select the 3G / WCDMA ONLY network in your Mobile Connections area in your settings (temporarily) for dropping or unable to make incoming/outgoing calls
*Is your phone locked? Contact your previous provider to unlock it for you. You will need your imei number, dial *#06# to get it.
*Check if your phone is blacklisted here: https://www.devicecheck.ca/check-status-device-canada/
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