Moving from PAYG to monthly

[Vancity]

I have just switched from pay as you go to pay monthly and they gave me a new sim. What do I do with the payg sim? Do I keep it? I don't think it's on a rolling plan just a bundle plan. 

[pgn]

Guide: Migration & porting into O2 has the info you need - if your PAYG number needs to be moved to your Pay monthly SIM, the guide should help.