Why is the fingerprint unlocking insensitive after the tempered film is applied to the POCO F7 Ultra?

The POCO F7 Ultra uses In-screen ultrasonic fingerprint unlocking, which is more sensitive and improves the unlocking experience at night, but there are certain requirements for screen protectors. Films that are not certified by Xiaomi will have an impact on the fingerprint-unlocking experience. To ensure the unlocking experience, please use the official protective film.
If the fingerprint unlocking is abnormal after applying the third-party tempered film, please tear off the film and re-enter the fingerprint for use. We are also continuing to pay attention to the problems you reported and are working on improvements. We believe that the follow-up will definitely bring you a better experience. Thank you for your understanding and support.