Hello there, Linda-Herrington! We know it is vital to be able to use your phone while traveling internationally, this way you can stay connected with your friends and loved ones, and we would be more than happy to help you. Can you tell us a little more? What is the make and model of your device?
That's on whoever carrier that sim is from. Tossing in sim cards into a phone doesn't guarantee it works with the network.
Verizon has some plans with Canada coverage and travel pass if it doesn't, why do you need another card?