I’m using iPhone 12 Pro with the newest iOS version . I’ve set up Face ID before and it works for a few months, but suddenly it cannot recognize my face, so I reset the Face ID. When I set up the new Face ID, it keeps saying move iPhone lower/higher. No matter how much I move my phone, it still won’t have any effect and I did restart my phone so many times still getting same thing every time I am setting face id
If your Face ID is not working, see this, If Face ID isn't working on your iPhone or iPad Pro - Apple Support and this If an alert says Face ID has been disabled on your iPhone or iPad Pro - Apple Support. If neither help, then use the Get Support link at the top of the page here to contact Apple Support for service, or make a Genius Bar appointment at your nearest Apple Store.
If your Face ID is not working, see this, If Face ID isn't working on your iPhone or iPad Pro - Apple Support and this If an alert says Face ID has been disabled on your iPhone or iPad Pro - Apple Support. If neither help, then use the Get Support link at the top of the page here to contact Apple Support for service, or make a Genius Bar appointment at your nearest Apple Store.
Face ID setting problem
