Quick question regarding porting numbers

[jake000]

I am changing from Virgin to Vodafone. When I receive the Vodafone sim card do I need to use that and have a temp phone number or can I use my virgin sim card and then after a few days my Vodafone one will take the number?

How does it work?

Thank you

 

[jake000]

Thanks for the information. I never received a date but I did put my PAC code in when ordering over the internet