According to a Weibo digital blogger who posted a revelation, the upcoming Vivo X Fold's under-screen fingerprint scanner uses a 3D ultrasonic fingerprint module, the first time the technology has been used on a folding screen phone. Compared to traditional fingerprint sensors, ultrasonic fingerprint recognition technology has a number of advantages. On the one hand, ultrasonic fingerprint recognition takes up less space, saving valuable space inside the phone; on the other hand, ultrasonic fingerprint recognition is faster, solving the previous problem of waiting for fingerprint recognition. The most obvious improvement to the user experience is the greater penetration of ultrasonic fingerprint recognition, which greatly increases the success rate of recognition and solves the previous problem of under-screen fingerprints failing when they are exposed to water.