Open the Wallet app on your iPhone
Tap the plus sign
Tap Debit or Credit Card
Tap Continue
Use the camera to scan your Capital One card or enter the card details manually
Follow the on-screen instructions to verify your card
Complete verification through Capital One if prompted
Tap Done when the card is added
To add it on Apple Watch, open the Watch app on your iPhone
Tap Wallet & Apple Pay
Tap Add Card
Follow the prompts to finish setup