I have a couple credit cards set up and operating fine using Apple Pay on my iPhone 7 (running iOS 10.2.1). Can anyone comment on what happens and what procedure, if any, is needed if I travel to another country and swap out the SIM card local to that other country? Let's say the country I'm visiting also has banks that support Apple Pay (in case that matters). After swapping out the SIM, will I lose the ability to use my existing, registered cards in Apple Pay? Do I have to reactivate them somehow, and if so, does anyone know the step-by-step means to do that? For example, should I remove the cards from the Wallet even before removing my original SIM, and only re-add the cards after installing the new SIM? Is there a possibility that I will not be able to reactivate the cards; e.g. the bank-issuer may try to send an SMS text or something and because I have a different phone number, then I won't be able to activate them again?