Redmi, a Xiaomi spin-off phone brand, says it has made in-display fingerprint sensors that work with LCD screens. Previously, only OLED screens supported them.

In-display fingerprint scanners use a camera to take an image of the finger, and OLED panels allow light to pass through the display and reach the sensor. In contrast, LCD panels do not transmit ...

Now, Redmi is showing off a new under-display fingerprint sensor that works through an LCD panel. So far, under-display fingerprint sensors have only been possible on OLED displays.

Digging into the tech, SamMobile does warn the sensors in all three phones won’t identical. The premium Galaxy S10 and Galaxy S10+ will use ultrasonic display-based sensors while the entry-level ...