Vivo X21 in-display fingerprint sensor review: it really works

Vivo X21 in-display fingerprint sensor review: it really workshttps://www.theverge.com/circuitbreaker/2018/6/11/17448214/vivo-x21-ud-in-display-fingerprint-sensor-review
https://www.worlds50.com/2018/06/vivo-x21-in-display-fingerprint-sensor.html