How can I open phone by Face ID?

Your iPhone X is the earliest to support Face ID.

If you didn't set up Face ID when you acquired your iPhone read Use Face ID on your iPhone or iPad Pro

If Face ID is set up but not working read If Face ID isn’t working on your iPhone or iPad Pro

Or read If an alert says Face ID has been disabled on your iPhone or iPad Pro which is also linked at the head of this page.

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