Once you contact Virgin to get you device unlocked, then you should be able to use a sim from any carrier globaly. In Canada, any device sold after Dec 1 2017 should come unlocked. So as long as you sim is active with Virgin, it should continue to wo...
what type of phones do you have, and when did you purchase? Only phones sold after Dec 1 2017 will come unlocked automatically (able to connect to any carrier). You may need to contact your previous provider (Rogers?) to help unlock.