I can’t add a payment on my son iPhone help please

Accounts set to an age under 13, cannot have payment methods added directly to them.

If using Family Sharing, the Family Organizer's card is used for any purchases initiated by other family members.

When in Family Sharing, family members cannot use their own payment methods. Only the Family Organizer's payment method is used for all payments.

Hello Flakism18, If a Debt card is not working in Wallet I would call the issuing Bank to see what the problem might be. Also is your son signing on to the iPhone with his AppleID and is the Debt card in his name? I know most Credit Cards require the user to be 18 or older, but not sure the age requirement on Debt Card, so give the issuing Bank a call and ask if the Debt card works with Apple Wallet.

See -> Related Article: If you need to change or update your Apple ID payment method

• If you want to change the card, you need to add first the new card, then remove the old card.

It might be screen time

What happens when you tried to add the card exactly? Do you get an error? Of so, what does it say?

Does the "Add Payment Method" button not work?

You need to explain what happens when you try to add it exactly. Just saying it "won't allow you" to do it, is not helpful.