Transfer old number

[Yanyanyan]

Hi, I want to buy a pay as you go SIM card, is it the same way to transfer my old number like the monthly plan. 
Text PAC 

thanks 

[Les7019]

I have mynewsim contact but my old number not been added it's a new one

[Jon_K]

Hi @Les7019 

Where is your old number currently? Is it with another network?

Jon