Best way to check is to enter the number in the 'Transfer Number Section', and see if it I'd Eligable for Port or not. If it's not than unfortunately you won't be able to bring the Number to Public Mobile, and if it is Eligable and let's you continue to the next step you'll need to make sure the Provider your Porting in from is listed as an Available option in the carrier section and if it is you'll have to have a paid subscription with the App in order to get an Account Number. That's the only way I see something like this working.
Alternatively you can get a nice and good new phone number from Public Mobile if it's not able to be Ported in. (If you select a different City in your Province the Prefix will change. Example Winnipeg, MB is 431-557, and Stonewall is 204-404, I much prefer the 404 over Winnipegs prefix.)
