1. What is portability?

Portability is the procedure that allows subscribers to change their telephone operator (fixed or mobile) keeping the same number.

However, this process does not allow the subscriber to retain the number in case the service is switched [e.g. switching from the fixed telephone service to the mobile telephone service (or vice versa) or from the nomadic Voice over Internet Protocol (VoIP) service to the fixed or mobile telephone service (or vice versa)].

Portability rules are established by lawhttps://www.anacom.pt/render.jsp?contentId=1099877 and by ANACOM regulationhttps://www.anacom.pt/render.jsp?categoryId=333120.