How can I lock my Apple Card now that it’s paid off?

You can lock a physical titanium card so it cannot be used by following the steps in the support document linked below.

click here ➜ Lock or unlock Apple Card - Apple Support

You cannot lock the digital version, buy you can choose not to use it, or close your Apple Card account entirely.

click here ➜ How to close your Apple Card account - Apple Support

By not using it.

Seriously.

Any pre-authorized and recurring transactions WILL continue to be processed … even if you “lock” your titanium card within wallet.

(This in not unique to the AppleCard. It IS a normal function of almost all credit cards to allow recurring charges to still be processed in a timely manner when a card is lost or stolen)

You’re certainly welcome.

👋