Google's Pixel 4 duo wasn't the most warmly received smartphone this year. It made some design and hardware choices that didn't exactly resonate with many smartphone users like the over-hyped Project Soli gestures, and the switch to Face Unlock from fingerprint - the Pixel 4's camera has been its saving grace. The Pixel 4 was Google's first departure from the fingerprint sensor to a 3D facial recognition model. The fact it could still work with the user's eyes closed was a huge security risk that Google has still not fixed. All this aside, a small number of users have been experiencing...
Source: https://www.gsmarena.com/face_unlock_is_malfunctioning_for_some_pixel_4_users_after_latest_ota-news-40969.php