Updating payment method
Why can't I update my payment method on the Payment & shipping screen?
iPhone 11
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Xyz-123 Said:
"Updating payment method: Why can't I update my payment method on the Payment & shipping screen?"
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Use a Computer:
Perform this using a computer, as it would be more user-friendly doing so. This is the link to refer to: Change, Add, or Remove Apple ID Payment Methods - Apple Support