Open the Wallet app on your iPhone
Tap the card you want to update
Tap the More button
Tap Card Details
Update the billing address, phone number, or other available details
If your card number or expiration date changed, remove the old card
Add the updated card again if needed
Open Settings
Tap Wallet & Apple Pay
Select the card if available
Update any linked account or contact information
Contact your bank or card issuer if the card details do not update automatically
Restart your device if the changes do not appear
Make sure your iPhone is signed in to the correct Apple ID
Check that your device is connected to the internet