Follow the steps below to set up your preferred digital wallet:
Make sure your iPhone is currently updated to the latest version.
Open your app page and scroll until you find Apple Pay®.
Select the app and you should be given the option to add a new card or use your default card from your iTunes account.
If you want to add additional cards, go to Wallet and tap.
Follow the steps to add a new card. Watch the demo to see how it works. If you're asked to add the card that you use with iTunes, cards on other devices, or cards that you’ve recently removed, choose them, then enter the card security codes.
Tap Next. Your bank or card issuer will verify your information and decide if you can use your card with Apple Pay®. If your bank or issuer needs more information to verify your card, they'll ask you for it. When you have the information, go back to Wallet and tap your card.