Open the Wallet app on your iPhone
Tap the plus sign
Tap Debit or Credit Card
Tap Continue
Follow the prompts to add your bank card
Scan the card or enter the details manually
Verify your card with your bank if prompted
Complete the verification process
Open the Settings app if needed
Tap Wallet & Apple Pay
Tap Add Card
Select your bank card and finish setup
Make sure your bank supports Apple Pay
Ensure your device is signed in to iCloud with your Apple ID