which province are you at?
is your data working?
can you make outgoing calls?
can you text out or receive text?
did you try putting your SIM onto another phone to confirm if it is a phone issue or SIM?
One thing to try. Power down phone, pull the SIM out clear it bit and put it back in firmly, power up and see if that works
It is possible that your port is stuck. Maybe check your old carrier SIM card to see whether it is still working.
Your previous carrier will send a port request confirmation text to your old carrier SIM card. Did you respond yes?
Here is some more information: