When you edit your payment information, it's automatically updated for all apps and services that you signed in to with your Apple ID (App Store, iTunes Store, iCloud, and more). Very convenient, isn't it?
First of all, let's navigate to the section where you can make the changes:
- Open the Settings app.
- Select Your Name > iTunes & App Store. With iOS 12.2 or later, you can go to Settings > tap Your Name > Payment & Shipping.
- Tap your Apple ID (usually it is your email address), then—View Apple ID. Here you might be asked to sign in.
- Tap Manage Payments. (Or Payment Information, if you are on an older iOS.) Now you can edit your payment methods.
Update a payment method
Tap a payment method that you would like to update and edit the data displayed here. You might be asked to enter the security code that's printed on your credit or debit card.
If you see Apple Pay after the last 4 digits of the card number, go to the Wallet app to edit the card information.
Add a payment method
Tap Add Payment Method.
Remove a payment method
Tap Edit > Remove [ ]or swipe left and tap 'Delete'.
Change the order of your payment methods
Tap Edit, then use the move order icon to change the order of your payment methods. Apple will attempt to charge payment methods in order from top to bottom. You can't change the order in which Apple ID balance is charged.