Open the Wallet app on your iPhone
Tap the plus sign
Tap Debit or Credit Card
Tap Continue
Position your card in the frame or enter the card details manually
Enter the required card information
Verify your card with your bank or card issuer
Follow the on-screen instructions to complete setup
If needed, add the card on your Apple Watch through the Watch app on iPhone
If needed, add the card on a Mac or iPad through Wallet and Apple Pay settings